Three years ago, an abyssal rift descended on the world. Delivery rider Shen Yuan was pushed into a rift by his former teammates, but in a desperate situation he awakened the [Eye of Rules] - able to see all hidden rules. He can see traps, monster weaknesses, and shortcuts to levels that others cannot see. The first instance of SSS was cleared, the second instance of SSS+ was completed perfectly for the first time in history, and the player was promoted to rank six. However, the deeper he went deeper, the more he discovered that the abyss was not a natural disaster - someone was behind the scenes controlling a chess game with the world as the chessboard, and his parents were trapped in the deepest part of the chessboard.
