Harry is going away for the weekend and asks Lucy to look after his house while he is gone. A young Greek couple in the building will be getting married soon, but the young lady is very upset because the reception reservations fell through and she thinks she'll have to call the wedding off.
Lucy suggests having the wedding reception in Harry's house. Unfortunately, Harry returns early to find a houseful of Greeks, and Lucy tryies to convince him that it is all a surprise birthday party for him.
Special Notes: It seems the script writers haven't paid attention to show since Harry just recently had his college reunion in episode #54, "Lucy the Coed".