Although he lost his parents and half his limbs in a car accident, Bei Ming is determined to live life to its fullest. After defending his childhood friend from some thugs, he wakes up in a hospital bed... which is normal enough, until he sees a hot-tempered dog demon sitting beside him! His name is Xiao Tan, and their spirits have somehow merged. Chained to one another, the two now have to work together in order to understand how and why this happened. And what they're going to do about it...