After a night of partying, Lily wakes up with a nasty hangover, her car parked on the porch and no memory of how she got home. To teach Lily a lesson, Sean and Claudia decide to sell her car and have her sign a contract that she will call them when she is too drunk to drive. Angry at losing her car, Lily pretends to be drunk night after night in order to make her parents give her a ride home. Meanwhile, Eddie makes a huge profit when he sells Lily's car for Sean.