French exchange student Guillaume 'Guy' need a host family stat, so Eric volunteers his, without consulting anyone. Only the teenage daughters approve, given the French's lover reputation. That's also why Matt worries and volunteers as chaperone, only to find his date Michelle prefers Paris memories to 'plain' Matt's company. It's worst for Simon, who has to move back with Ruthie so long and gets tempted by her, yet blamed alone, to smoking the cigarettes they 'find' in Guy's luggage. Yet Guy is the first to lose his patience with all those 'stupid Americans'.