 The episode, featuring the first appearance of Ace Rimmer, was intended to end the series; but "Meltdown" was rescheduled and broadcast last due to the Gulf War.In a parallel dimension, Arnold Rimmer works as a test pilot in the Space Corps under the name 'Ace' Rimmer, who is popular, brave and a charming, good-looking person, with the others from "Red Dwarf" living alternate lives as well – Dave Lister is a Head Technician in the Corps; Cat is human and priest; Kryten is human and Rimmer's superior; and Holly is human and Kryten's secretary.Returning from a mission, Ace is given the task of test-flying a dimension-jumping prototype spacecraft, accepting despite the risk he may never return.