Red Dwarf

Timewave (12x3)

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After the crew discover, name and take soil samples from a 'Helium-7'-rich moon (Planet Rimmer), Starbug is hit by a Time Wave, bringing them into contact with a Twenty-Third Century ship, the S.S. Enconium. However, there are two problems. First, the ship is set on a horrific collision course with Planet Rimmer. And second, upon the ship, all forms of criticism are punishable by life imprisonment or 'draining'.