In the context of modern cities, the world hides extraordinary powers. Su Che, an ordinary college student, was on the verge of death in a fatal conflict with superpowers, and accidentally activated the mysterious "Bond Roulette" system. This system forcibly binds him to one of the most dangerous and powerful beings in the city - Gu Yexiao (who appears to be the president of a multinational group, but is actually a giant in the dark world). The system obtains energy by monitoring Gu Yexiao's emotional fluctuations caused by Su Che. The energy can be used to extract various cards based on Gu Yexiao's abilities (skills, equipment, and even sensory sharing).
