Eighty years ago, the ruins of the first source material appeared in the world, and the card era came suddenly.
The seventh area, buried deep beneath the Steel City, seals the original secrets of the Source Material.
The source material cracks all over the place are overflowing with card energy that rewrites the world all the time.
The secret realm of Nanling is covered in fog all year round, giving birth to a herd of card beasts unique to this land.
The boundless wilderness of Mobei has become a trial battlefield for countless card masters to advance and retreat in life and death.
The Sakurajima Sakura Restricted Area has intensively researched technology cards and reshaped the combat power system with ultimate craftsmanship.
The Roman Federation is deeply involved in the imprinting genre and is in charge of the fragments of the ancient card civilization.
There is an undercurrent lurking deep in the city defense army, using taboo fusion experiments to brew a conspiracy to subvert the world.
Eighty years have passed, with strict ranks and quality locks, and the power of cards has quietly affected the entire world.
Lu Chen has the talent of reducing card consumption. This is his biggest secret and a legacy left by his father.
Holding the mysterious notebook left by his father, following the fragmentary clues scattered among the pages, he gradually clears the fog, explores the secret truth behind his father's sudden death, and slowly unravels the conspiracy and the ultimate secret of the source material that have been buried for decades.
