Ruby's off to the seaside with Mum, Dad and Mum's work friend Deb and her family. It's soon clear that Ruby and Sasha, Deb's daughter, have absolutely nothing in common, so when Sasha does decide to take a sudden interest in monkeys in an evil attempt at one-upmanship, this can mean only one thing: REVENGE.

It's a good job Dad wants to teach Ruby to swim, as it gives them both an escape from Sasha and her family. Well, it would be a good idea if he didn't almost drown her!