The fifth Duncan member is one week overdue and Amy is in a bad mood and constantly rude to the family. Teddy tries to helping her by inducing labor, but Amy does not want to have the baby on Charlie's birthday because she fears the family will forget her. Meanwhile, Bob and PJ go out looking for a new car. After choosing their ideal car, the Serenade, they take it home, but to their luck, it does not fit inside the garage. Gabe is sent to buy Charlie a doll for her birthday, instead he ends up buying a video game, "Attack of the Zartians". Amy goes into labor on the day of Charlie's birthday and Teddy discovers that Amy forgot to mail the invitations to her birthday party, so she tells Gabe and PJ to throw her a birthday party; Gabe and PJ dress up as princesses in order to entertain her. As they rush to the hospital, Teddy's car runs out of gas. They hitchhike on an ice-cream truck to the hospital. As they are on their way to the hospital, Amy gives birth to their baby boy, Toby Wan Kenobi Duncan.