After traveling through countless realities, Commander 'Ace' Rimmer returns to the Red Dwarf crew to ask a favor of his alternate self. It seems that the real Ace Rimmer died years ago and has been replaced many times over by his counterpart from each reality. This Ace Rimmer will soon die and asks our Rimmer to be his successor as an inter-galactic hero. After a little push from Lister, which seems to bring the two closer together, Rimmer decides to accept the offer and begins his training. When Ace dies, Rimmer dons his outfit and says his goodbye to the crew before leaving Starbug.