Everyone in the underground fight circuit knows Yan Xiao's fearsome reputation. His fists crash like thunder, the ring runs red with blood, and he has never admitted defeat. Then one night, the entire city loses power, and in the darkness, his pupils suddenly glow a ghostly blue: he has awakened an ability to devour other people's luck. Just as he is about to devour his final target, a cool voice rings out: “Don't touch him.” Chu Zhuo stands against the light, broken strands of power cable coiled around her fingertips, her eyes colder than the night itself. The blackout wasn't an accident. It was a trap she set to wait for his awakening. One survives by devouring, the other wields blackouts as a blade. As the gears of fate mesh, the whole city becomes their chessboard.