Grandpapa Addams comes to stay with the family while they rebuild his neighborhood. The family knows he still misses his late wife, and make arrangements to surprise Grandpapa with a a gift to him of two weeks at Club Dead - a swinging resort for singles over 50. Grandpapa finds out but mistakenly thinks he's being sent to a nursing home so then tries to prove his youth to the family and pretends to be 50 years younger.