With no new battles to fight, Goku has been living a quiet life in the countryside with his wife Chi-Chi...and their son Gohan! While Goku makes plans to spend a happy day with friends on Master Roshi's island, a powerful new threat is on its way to Earth. And the arrival of this sinister alien could spell disaster for Goku and his friends!

Goku and Gohan attend a reunion on Master Roshi's island, where Goku introduces his son to all of his old friends. The smiles quickly fade, however, as an unexpected visitor lands on the island, and for Goku the day becomes a reunion of a different kind. A powerful alien has arrived. It's Raditz: Goku's evil older brother!

Raditz has kidnapped Gohan! And unless Goku agrees to forsake his friends and the people of Earth by joining the sinister Saiyan, he may never see his son again! All hope is not lost, however, as a second uninvited guest arrives on the island - and Goku forges an unlikely alliance!

The situation looks bleak for Goku and Piccolo, as Raditz easily deflects every attack they send his way. But Piccolo may have a way to stop the sinister Saiyan. He's perfected a powerful new attack, the Special Beam Cannon!There's only one problem: Piccolo needs time to gather the energy for the blast, which means Goku will have to last for five minutes against Raditz alone!

As Goku takes blow after punishing blow from the evil Raditz, Gohan is able to watch no longer! The young boy's rage unlocks an awesome power sleeping within him, and he unleashes a mighty attack that not even Radtiz can resist! But as quickly as Gohan's power appears, it vanishes. And when Raditz prepares to strike back, Goku must make the ultimate sacrifice to save his son! This all only leads to the revelation that two more Saiyans are on their way to Earth.

With Raditz defeated and Goku gone from this world, the surviving Z Warriors must begin preparing for the arrival of two more Saiyans who will reach Earth in one year's time. Piccolo takes Gohan into the wild for a severe training program, in the hope that his hidden power will be revealed. Meanwhile, Goku embarks on a new adventure in the next world, as he must travel the endless miles of Snake Way to receive training from the legendary King Kai!

Gohan begins his first day of Piccolo's training. Alone in the wilderness, he must quickly learn to take care of himself. But that isn't easy when he's tired, hungry - and being chased by hungry dinosaurs! If Gohan's first day is this dangerous, how will he ever survive for the second? Piccolo secretly watches these events.

Krillin receives a startling message, sent by Yajirobe. Korin wants him to gather Yamcha, Tien, and Chiaotzu and report for special training! And if that weren't enough, he and Roshi still have to find a way to tell Chi-Chi what's happened to Goku and her son. Meanwhile, Gohan's training causes him to undergo a shocking transformation!

Gohan awakes in the wilderness to find his tail gone and a new set of clothes on his back. But the puzzled boy has little time to figure out what happened before a group of wild animals try to have him for breakfast! The chase leads Gohan into the depths of an ancient cave, where he meets an old Capsule Corp robot. The robot has lived alone in the cave for over 30 years, and he's not happy to have visitors!

Krillin pulls Yamcha away from a rowdy baseball game to begin training at Korin Tower. Meanwhile, Gohan's adventures in the wilderness continue, as he makes a new dinosaur friend! Gohan is happy to finally have some company. That is, until he gets a harsh reminder - not all dinosaurs are friendly!

While Goku runs down Snake Way for a meeting with King Kai, Gohan gets a very important survival lesson from a T-Rex. Meanwhile Vegeta and Nappa head towards Earth but make a quick stop on planet Arlia and become prisoners of the tyrant king who rules the planet. After a brief scuffle with the monster Yeddy, the Arlians realize that the two Saiyans are more for then they can handle as Vegeta and Nappa leave their terrible mark on the planet.

Gohan is busy with his survival training and spends his day tormenting a clumsy but delicious T-Rex. Tien and Chiaotzu are training across the planet, but their workout is interrupted by a very demanding Launch. Goku tries to find King Kai on Snake Way while Piccolo's power gets out of control with disastrous results.

After waking up dazed and disoriented, Goku sees a fruit tree. Not one to deny his appetite, Goku helps himself. But watching him are two giant ogres who want nothing more than to use the hero as a play toy! If Goku can defeat their challenges, the ogres vow to show him the way back to Snake Way. But can these two beasts be trusted?

Finally back on Snake Way, Goku comes across a house. Thinking it belongs to the legendary King Kai, Goku believes his amazing journey has ended. But he soon finds himself begin deceived by Princess Snake, who will do anything to keep Goku her prisoner forever!

Still in shock that Raditz was able to dodge his strongest attack, Piccolo flies off the handle causing him to split in two! Gohan takes a break from training and begins to dream of his mother and father. The next day he decides to visit his mother by traversing the sea on a makeshift raft. He soon gets caught in a storm and remembers he can't swim! Could this be the end of poor Gohan?

After surviving a rough night on a stormy sea, Gohan washes up onshore and is nursed back to health by two orphans named Rom and Chiko. It turns out that they are part of a larger gang of orphans who live on their own and are constantly on the run from meddling adults. Pigero, the orphans' leader, hatches a plan to take the orphaned children to a safer hiding place but when the police show up everything goes wrong!

Mr. Popo leads Earth's top warriors to Kami's Pendulum Room where the past, present and future exist at the same time. After an eventful trip back in time they all realize they have to train a lot harder if they are going to stand a chance against the two Saiyans who are speeding ever closer to Earth.

Gohan continues his martial arts training under the watchful eye of Piccolo, but a strange transformation takes him over. A full moon causes the young Saiyan to rampage out of control! Meanwhile Goku finally makes it to the end of Snake Way and mistakes a friendly ape named Bubbles for the mythical King Kai. With two of our heroes going bananas it looks like the two sinister Saiyans will have an easy time invading Earth!

Gohan's training with Piccolo continues to intensify, but it's Goku who faces the biggest challenge. Goku begins his training, but it is unlike anything he's ever experienced before. The intense gravity of King Kai's planet makes training difficult, but when he learns that the Saiyans are used to extreme fighting conditions, Goku is inspired to give it his all. But will it be enough?

After Goku completes the first phase of his special martial arts training King Kai instructs him to bash Gregory with a hammer. Easier said than done. After an exhaustive chase, King Kai tells the story of the Saiyan race. Inspired, Goku resumes his training and eventually manages to put the hammer to Gregory. Impressed, King Kai agrees to train Goku personally. But will it be enough to stop the incoming Saiyan invasion of Earth?

Goku's training with King Kai complete, Master Roshi and the gang summon the Eternal Dragon to wish him back to life! And they're not a moment too soon. There's only one day left before the Saiyans arrive! The problem is - it's going to take Goku two days to return on Snake Way!

The Saiyans Vegeta and Nappa defiantly announce their arrival on Earth with the complete destruction of East City. Sensing their power, Goku, Gohan and Krillin prepare for the worst and meet the Saiyans face to face where Piccolo learns of his origins on the planet Namek. Yajirobe also learns of the Saiyans arrival but uses it merely as an occasion for profit. Our heroes are left facing on onslaught of sprouted Saibamen under the grinning command of Vegetta and Nappa

Having completed their year-long journey to Earth, the two snister Saiyans made their presence known with explosive style! Now Krillin, Piccolo, and Gohan stand face to face with these saiyan monsters, and the diabolical henchmen they've brought with them. Can they hold out until Goku arrives?

Enraged over the loss of his friend, Yamcha, Krillin unleashes a powerful attack that destroys the maniacal Saibamen once and for all. But the victory is only temporary. Now the Earth's defenders must battle the Saiyans themselves - and the terrifying Nappa is ready for a fight!

In a desperate attempt to save his friends, Chiaotzu sacrifices himself to stop the evil Nappa. But when the smoke clears, Nappa is left standing. Now Tien and the others must carry on without their friend as Nappa launches another devastating attack. And though his body is broken, Tien has one trick left that could put the diabolical Saiayn down, once and for all!

Vegeta has called a halt to the fighting, and Nappa uses the time to go on a rampage! Meanwhile, Goku reaches the end of Snake Way and races to rejoin his friends, But is he already too late to save them from the deadly Saiyans?

Piccolo, Gohan, and Krillin do their best to stop the Saiyan invaders, Vegeta and Nappa, from finding the Dragon Balls and taking over the planet. Meanwhile, Goku is flying back to Earth on the Flying Nimbus with more power than he has ever had before. Will it be enough? And will he arrive in time?

Piccolo makes the ultimate sacrifice in an effort to save Gohan from the Saiyan's ruthless rampage. Just when all seems hopeless, Goku finally returns to Earth with an incredible new level of power and confronts the Saiyans. But, will this new power be enough to defeat Nappa and Vegeta?

Locked in the final battle with Earth's Saiyan attackers, Goku begins to demonstrate the skills and training he received from King Kai beginning with a devastating attack on Nappa. But when Nappa concedes defeat under the command of Vegeta, he turns on Gohan and Krillin only to be stopped by Goku's Kaio-Ken attack. Broken and defeated, Nappa is finally vanquished by Vegeta leaving Goku to face him alone.

After sending Gohan and Krillin away, Goku decides to take on the mighty Vegeta all by himself. As his family and friends wait and wonder, Goku and the powerful Saiyan face off in a destructive battle. Both warriors seem evenly matched, but both are hiding their true strength. Will Goku's hidden abilities be enough to put an end to this once and for all?

Vegeta and Goku continue their one-one one battle of strength, will, and determination. Blow by blow, the two warriors seem evenly matched, until Vegeta reveals the secret power of the Saiyans...the ability to transform into a giant ape, whose rage is capable of destroying entire civilizations and planets! Can Goku find a way to stop this monstrous assault?

The battle continues between Goku and Vegeta, who is now a completely transformed Saiyan Warrior. When Gohan senses the danger his dad is facing, he convinces Krillin that they must return and fight. Goku is left with no choice except to use the Spirit Bomb. But when that fails, he is left in the clutches of Vegeta with no help in sight!

With Goku caught in the clutches of the giant ape Vegeta, Krillin and Gohan launch a desperate attempt to save him! All is for naught, however, as Krillin's Destructo Disk fails to sever the Saiyan's tail. But a single hope remains for reversing Vegeta's monstrous transformation, when an unlikely hero steps out of the shadows - Yajirobe!

While Gohan fights for his life against Vegeta, Goku passes the power of the Spirit Bomb to Krillin. With King Kai's guidance, Krillin launches the bomb at Vegeta in an attack that sends the evil Saiyan sky-high. Now that he's been sent hurtling toward the outer-reaches of the Earth's atmosphere, this is surely the last our heroes have seen of Vegeta - or is it?

Gohan transforms into the giant ape, much to the dismay of the angry Vegeta. After a grueling battle, Vegeta managed to cut off Gohan's tail, taking away his ability to transform. But, the giant ape fell and crushed Vegeta, leaving him beaten and defeated. Krillin decides to finish the Saiyan, once and for all, but Goku has other plans...

The battle with the Saiyans finally won, Goku, Krillin, and the others mourn the loss of Yamcha, Tien, Chiatzu, and Piccolo. With Kami also gone, the Earth's Dragon Balls have disappeared. There is no hope for wishing any of the fallen heroes back to life... Or is there?

As the weak and weary warriors of Planet Earth are bandaged and cared for, Bulma accidentally destroys the Siayan spaceship, leaving no way to get to Planet Namek! But, Mr. Popo reveals that there might be another spacecraft they can use. Can they get to it in time, and will the old and forgotten ship even work if they do?

Goku, Krillin, and Gohan nurse their wounds and prepare for the return of the Siayan attackers while Bulma follows Mr. Popo to find a spaceship to take her to Planet Namek. There, she plans to find the Dragon Balls in attempt to bring back Piccolo. Can Goku recover before it's too late? Can Bulma get to Planet Namek, and once there, what obstacles await her?

Gohan joins Bulma and Krillin as they head to Planet Namek in search of the Dragon Balls. What begins as a mundane trip becomes chaotic when they encounter a bizarre situation in the emptiness of space. Finding themselves on some type of space station, they set out on foot to find their escape.