Paddington's voice is discovered by a famous diva who is thrilled that she has found a new talent to mold. She will present him at the opening of her new opera.

The famous train, full of history and intrigue, is the perfect setting for a little dinner theatre. But what's real and what's part of the performance becomes a little blurry when Paddington's jar of marmalade sets of a mystery that is not part of the script.