Robbie's father Ed Palmer, a deadbeat who left the boys very young, turns up and slickly gets free board, next convinces his boy to move out and rent a room together. Eric perseveres to make Robbie realize he can't waste his future on a super-dad that never existed, as his very imperfect mother always claimed. Simon's social life clashes badly with parental essay standard demands. Matt is furious to find Ruthie lied to use him in willful disobedience. Lucy hangs out with classmate Ashley's 'cool' mother Serena, only to find a 'regular' mother is better.