Ian Iansson is a little bit worried about his school trip. Firstly, Ian doesn't have any friends, plus, his mum has packed him ten pairs of pants for the two-day trip. But as it turns out, these are the least of Ian's problems...

Because when Ian's class arrives at the spooky old house, there's something very weird going on. Something that looks awfully like zombies; groaning, dribbling zombies that no one but Ian seems to have noticed.