Ninjas invade Matheson, and Team Szalinski is in for much kung fu fighting to save the town. A monk, Master P'tui, appears to help Wayne and teach him martial arts. Meanwhile, Nick, tired of being bullied into doing other people's homework, invents a spray that can turn anyone into a kung fu expert. Also, Lord Bilious wants Diane to defend him after he tried to bribe town officials and landowners to sell him the town.

Randy Rude the Science Dude comes into town to visit. and he wants to get married so Wayne tries to fix him up with the love chair and love booster. Something happens when Randy tries to leave with the van and presses the booster button that blasts them into space. Or are they really in space?