While the 100th anniversary of Lucy’s aunt is approaching fast, Paddington dreams of giving her the perfect gift, an animated book she found at an antique store in London. But because the book is extremely expensive, Paddington is forced to work to raise the amount needed. His plans are forgotten when the book is stolen from Mr. Gruber’s shop. Extremely unhappy, Paddington is shocked when he learns he is suspected of theft. He is arrested and incarcerated. Because he has not enough evidence to prove his innocence, Paddington is convicted. The Brown family launches their own investigation to find the culprit.