This is a parallel world based on "cards". From education, entertainment to war, all human activities revolve around cards. When everyone reaches the age of eighteen and is in their third year of high school, the government organizes an "awakening ceremony". The ceremony will light up the "natal card" deep in each person's soul. The result of the awakening determines the card system and fighting style of the person's life: some awaken "flame mimicry", some awaken "weapon embodiment", and some awaken rare systems such as "library" and "time gear".
Cards are divided into basic cards, epic cards, legendary cards and forbidden cards. Players compete by building "decks" and playing "chains". The card life form "Card Spirit" has independent consciousness and can evolve in resonance with its owner. However, under the surface of peace, the power of some ancient cards is getting out of control. The legendary "God of Cards, Blank" sleeps in the source of the rules of the world - the "Card of Origin" that carries all things. Awakening is not only the opening of talent, but also the beginning of a huge game of destiny.
It is in this kind of world that the protagonist of the story, Lu Li, has become the "king bomb" that no one can understand.