Donald Bridges (John Ritter) and his wife Alice (JoBeth Williams) have a young son, Andy, (Kevin Zegers) who is emotionally disturbed due to a near drowning accident. The parents frequently argue with each other about how to raise their son until they have uninvited houseguests when a plane carrying Jarvis Moody (Christopher Lloyd) and Pepper Upper (Yasmine Bleeth) falls from the sky and crashes right onto their roof.