Terry Zucker has invented the best vacuum cleaner in the world - just turn it on and it cleans up all by itself. Every household in the UK has one, including the prime minister. Meanwhile, an important statue has been stolen. The team uncover the culprit, but in the struggle to capture him they accidentally switch on a vacuum capable of creating a black hole.

Mr Flatley receives a letter from his Great Aunt Jemima informing him that she has left part of her fortune to him in her will, but also receives a ransom letter threatening to blow up the school unless he turns the money down.