That meanie Lewis always teases Gilbert. So why would Lewis invite Gilbert to his party? When he discovers the reason why Lewis invited him. Gilbert decides to buy a present that Lewis definitely will not like. Gilbert goes to the party armed with a cheerful grin, a brightly wrapped package — and a plan to get even for Lewis's rotten behavior. What will happen when Lewis opens the present? This birthday has a much bigger surprise in store for Gilbert. . . . Young readers are invited to join the "New York Times" bestselling character Gilbert the opossum and his friends and family in this heartwarming picture book about birthdays, bullies, and doing the right thing. Full color.