After watching a late-night alien horror-movie, Paddington is convinced that anything that looks like an alien and co is an alien and co.

Mr. Curry has never had a birthday party, or at least, that is what he convinces Paddington of. So when he lets slip that it is his birthday, Paddington does the neighborly thing. But one surprise guest in particular knows that Curry's up to his old tricks: Curry's mother, and she is not impressed to learn her son lied about everything.