Callan didn't live a good life his parents abandoned him at birth and then people abused him and then abandoning him leaving him alone then one day he got shot by thugs and ended up in hell becoming a hellhound but after some time in hell he was feared and everyone knew him in hell then he saw a girl called Charlie on TV and made hotel then Callan decided to help Charlie with her hotel and after that he had some crazy adventures with them and with other demons as well