After mysterious things happen in the boarding school Haus Anubis, eight teenagers, who live there, get to the bottom of things and over time they solve the dark secret behind the wall of this house.

In a fictitious world, King of kings, John Frederick, sits on the throne to the most powerful empire of all time. His brutality, misogyny, racism, and unprecedented politics has earned him a title in secrecy as the Mad King. Although being warned by the grandmaster, and many more, the deep extractions of mother nature has led to an unexpected Long Summer as well as shocking natural disasters such as Floods and Wild-Fires in the western kingdoms. As a solution to all problems caused by the long summer, and to avoid rebellions in the realm, the King and his Chief Commander to the Royal Army decide to create a common enemy and conquer the southern lands of the republic of the sun.