In the fog-shrouded Abyss Academy, a brutal elimination tournament called the "Card Trial" is held every year. There are no rules here, no bottom line, just cards containing strange powers.
Guo Han is the "trash card master" at the bottom of the academy. There is only one card in his card pool that is called "junk" - [Eye of the Observer]. While other students were fighting each other with S-level cards, he could only hide in the shadows and survive.
Until that day, he accidentally activated the hidden attribute of the card - [Memory Extraction] during the trial. Drawing cards is no longer random. Every time he defeats an opponent, he can seize ownership of a card from the opponent. But this ability has a fatal side effect: every time it is used, a memory will be permanently lost.
When Guo Han found that he gradually forgot his sister's face, a more terrifying truth surfaced: the academy was not cultivating geniuses at all, but was conducting a cruel selection called the "Humanity Experiment." All students are experimental subjects, and behind each card, there is a real person sealed.
Guo Han, who lost his memory, began to plunder cards frantically. He wanted to rush to the top of the tower to find the man known as the "Card Maker". But with each level he goes up, he will discover more secrets: there is another identity in his forgotten memory...
