The Doomsday Club - Detention can wait. Saving the world comes first!

Jack and Conan's friendship is officially dead. Stuck in detention with Yash and Jerry after an all-out brawl, it’s a terrible start to sixth class. And that’s before they witness a monstrous beast step out of a portal outside their school. When it wanders into the crumbling mansion across the road, the boys follow. They have to investigate, right?