Harry finally defeated Voldemort, but some Death Eaters escape to London in Victorian Era. These Death Eaters start tormenting the Muggles again, and Vincent Phantomhive starts investigating. Both Vincent and Rachel are murdered, and Ciel manages to summon a demon. Harry manages to travel to Victorian Era. How would two protagonists work together to reach the common goal?

Wanna know how Diedrch got fat?