'If you don't wake up to yourself, Smalley,' Mr Cruickshank said, 'do you know what you're going to end up as?'

'Sheep's poop, sir,' whispered Mark.

Mr Cruickshank looked startled. 'I wouldn't have put it quite like that.'

Mark's father has always wanted him to be a Somebody. But unless Mark picks up at school, it looks like sheep's poop is where he's heading. Until... Mark and his friends discover they've lived before. Not only that - they were Famous and Important People!

But then things start to get a little out of hand. They find out they've been responsible for several of the world's big problems. So Henry Ford, Queen Victoria, Albert Einstein and even a famous racehorse get together to see if they can make up for their terrible mistakes.