When the "Oracle" game becomes a reality, mankind falls into a countdown to destruction. Gu Yan died in the first group wipeout, but returned to the three days before the game came with all his memories. Hidden tasks, dungeon mechanisms, player betrayal... He has insight into all futures. With the ability of "death retrospection", he vowed to reverse the defeat. But every time history is changed, the future moves into an even more unknown abyss. He is racing against fate, and every time he looks back, he is burning himself.