Xiao Bai has suffered from an incurable disease since childhood. Everything changes when he meets a mysterious stranger who promises to save him. They travel the world in the hope that the young man will regain his lost memory... In the distant past, young Xiao Bai lives in a foreign country as a hostage, studying medicine and helping those in need. One day, with the arrival of spring, when the peach trees are blooming, the princess tells him that the son of the Minister of War is sick and asks the boy to cure him. Xiao Bai asks for advice from a friend who lives in the mountains, and remembers that he recently had a strange dream: in a flowering garden he saw a huge extraordinary magpie...