Sales man Roy Knable spends all his free time watching tv, to the exasperation of his wife. TV salesman Spike convinces Roy to buy a satellite dish offering 666 stations. The recent inclusion to Roy's entertainment system sucks Helen him into Hellvision, a kingdom run by Spike, who's an emissary of Satan. Should they wish to come back to reality 21, for twenty four hours, the pair needs to survive devilish parodies of TV programs.