Paddington Bear and Mr. Gruber enter the Busy Bee Adventure Trail contest in which the winner is whomever finds the most objects starting with the letter "B," and the clever bear finds the most important B of all.Paddington Bear and Mr. Gruber enter the Busy Bee Adventure Trail contest in which the winner is whomever finds the most objects starting with the letter "B," and the clever bear finds the most important B of all.