Ning Yuan: The protagonist, who has higher athletic ability and IQ than ordinary people, and a strong ability to survive in the wild. He lost his memory after saving someone from falling into the water.

He Zhiyang: A member of the Hong Kong community, a thug, good at using knives and fighting. Brutal but loyal.

Su Jin: A medical student who fell into confusion after being abandoned by her climbing companions. She is kind and timid.