Nick, Lissie and Mr. Walker go on a camping expedition. The family dog Champ can't go with them because she has fleas. But by mistake Champ lands in cyberspace, where she spreads her fleas around to everyone, including the nasty Data Eater who has just stolen some information from Twipsy. Twipsy promises to get rid of the fleas, but only if he gets the stolen information back ...