When Steven's recently divorced brother Rob arrives with his son and daughter for a visit, the Keaton's become a sounding board for their relatives' family problems. In the wake of his divorce, Uncle Rob has given up his job as a CPA and is enjoying ""working in the great outdoors"" as a telephone repairman, a considerably less lucrative career which his teenage daughter Marilyn feels is a great hardship on the family, and particularly on her. It is immediately apparent that Marilyn deeply resents her father and believes that Mallory is the only person she can confide in, leaving everyone else feeling left out and curious about their conversations. The other Keaton kids are fascinated by the picture that her film buff brother Jonathan paints of ""life after divorce."" When Marilyn escapes to the mall with Mallory, she meets a Marine and arranges a date with him. She doesn't inform her father about it until she's walking out the door that evening, and though extremely upset, Rob feels pow