Intelligence director Suritai asks agent Kitami to steal money from anti-government guerrillas.

Klima, Deputy Minister of Industry of the Republic of Alabanda, has come to Japan to purchase materials for the water dam construction. Kitami, who called himself a salesman and met with Klima, acts as his bodyguard. However, Kitami learns that a large number of industrial cylinders unrelated to dam construction have been purchased, and Klima secretly confined her secretary, a former army colonel, and threatened to produce poisonous gas. Klima packed the gas in a cylinder and sent it to Alabanda in an attempt to cause a civil war between the government and the tribes. Around that time, Klima secretly investigated Kitami's identity and learned that he was a secret agent.

In the third installment in the "Kokusai himitsu keisatsu" series, agent Jiro Kitami investigates the mysterious disappearance of a prominent scientist. Edited into Woody Allen's "What's Up, Tiger Lily?" along with the 4th film in the series, "Key of Keys".

In Hong Kong an International Secret Police (ISP) Agent is murdered while investigating ZZZ, a group bent on assassinating the Prime Minister of Buddhabal. ISP Agents Carter and Kitami are assigned to the case. When the Prime Minister arrives in Tokyo for a friendship visit, Carter and Kitami are on hand to protect him. On hand, too, are assorted ZZZ blackguards. Several attempts on the Prime Minister's life fail, until finally the ZZZ introduces a new device designed to eliminate not only the Prime Minister but the ISP Agents as well: THE KILLING BOTTLE, then, is a pocket-sized container filled with a substance that can expand to thousands of times its size and throttle its victim, then disappear leaving only the corpse.

Agent Jiro Kitami attempts to stop a smuggling ring from shipping arms to Vietcong guerrillas.