Drake the 1st Demon knight of the 12 Demon knights, First vampire (Dracula). He was betrayed by his father Lucifer Morningstar and his body was destroyed and his comrades were banished during the escape to earth. But Drakes soul was sent to earth and was accidently imprisoned in a 10 year old boy named Michael. Michael and his little sister who have been bullied by Society for being poor and not being able to cultivate for in this land only the strong have a safe in the week are left in the slums. all Michael wants is to protect his little sister from the world of cultivators and Drake with a mission of Revenge. Drake and Michael bounded by Faith team together for revenge and blood. So the question is, will they save the world and defeat hell or will they destroy both with No Mercy?