There's something fishy going on at school . . .

When twelve-year-old Marcus kicks his favourite football over the school fence, he knows he's never getting it back. Nothing that goes over that wall ever comes back. But when Marcus gets a mysterious note inviting him to join the Breakfast Club Investigators, he is soon pulled into an exciting adventure with his new mates Stacey, Lise and Asim to find out what is lurking on the other side of the fence – and get his football back!