Maxwell Pidgeon thinks monsters only exist in nightmares.

Then he's invited to join the Nightmare League - a top-secret organisation that protects the world from the creatures lurking in the dark. As an agent-in-training, Max must prove he has what it takes to keep the monsters at bay.

There's only one problem: the League is hiding the truth about Max's missing dad. Can Max survive training and trust his new friends, or will he risk his life and the lives of others, to make his family whole again?