Rick Riordan's adventurous stories brought together with JK. Rowling's wizarding world. The seven travel to England from a request of Charon and some undercover demiwizards to protect a wizard called Harry Potter from Voldemort. However, this year is the Triwizard tournament and trouble.

It is after the giant war and the wizarding war. Hermione, Luna, Neville and Draco not only fought in the wizarding war, they fought in the giant war too. When Nico, Hazel, Frank and Will get sent to Hogwarts to gain allies, what will happen then?