Annie decides to take a much-needed break from the family and heads to the beach on a solo trip to get some rest, leaving Eric (Mr. Mom) in charge of the large household. Meanwhile, Matt must relunctantly say goodbye to Shana as she leaves for NYU. Mary impatiently waits for Robbie to call her. Also, Lucy realizes that she may be interested in the wrong guy, and Simon learns some tips from his sisters on how to treat a girl.