Menial chicken soup machine repairmen Dave Lister and Arnold Rimmer have slightly less noble ambitions. Rimmer is in search of some illicit exam-cheating tech, to land a much-lusted-for promotion, and Lister plans to acquire a cat to smuggle back on board as part of a nefarious scheme to return to Earth. Mainly they just want to get as far away from each other as possible. However, their objectives are scuppered when they receive a cryptic message . . . from the future.