The death of a person of unknown origin at Ashford Academy wouldn't normally warrent the Area Burreau of Investigation. But when the suspects are an Eleven in the military and his odd friend, Jane might be a little too clever at his job for his own good.

Hitsugaya is sent to watch over Hogwarts to protect the living's souls from the Dementors while they search for Sirius Black and to learn about the soul eating creatures. But things don't go according to plan.