On a cold planet of ice and snow, mysterious creatures suddenly have appeared from the dark underground and have begun to attack the inhabitants. Can humanity survive the terror lurking beyond the horizon?

A mysterious man by the name of Lee dwells with Aak, Hung, and Waai Fu in the dark alleyways of Lungmen City. Styling themselves as Lee's Detective Agency, they strove to run errands, investigate mysteries, and mediate disputes for their neighbors. Herein lists a few of their actual yet strange cases to go with your tea.

Zhang Xiaofan, who was tragically orphaned overnight, was accepted as a disciple by Qingyunmen. After five years of hard training, he excelled in the martial arts of the Seven Vessels of the Mastermen. Senior sister Lu Xueqi was in danger and met Baguio, the woman who rescued the demon sect. At the same time, new dangers were also waiting for him.