Arthur and Marie have a rocky marriage. After Arthur forgets his wife's birthday, she decides to follow her mother's advice and make a few changes. Marie makes her husband a very special breakfast before her birthday cookout which makes Arthur feel a little strange. After a brief argument with his neighbor, Nick, about how much time the other man spends with his wife, Arthur passes out. When he wakes up, the world is a little different. He finds his wife having an affair with Nick, but quickly discovers that both of them have eyes on a third joining their fun. Arthur doesn't understand until he notices his voice is a little higher and his body a little curvier.