Guo Dahai runs away from home in order to escape from his aunt Guo Huilan and her slipper along the way he meets and befriends a friendly ex-doctor named Hu Yiming aka Dr. Hu who is now homeless.
Guo Dahai ends up falling into a coma due to his left kidney being smaller than his right kidney so only his right one could function properly and the doctors end up having to perform dialysis surgery on him.