Everyone in the underground boxing ring knows Yan Xiao's fierce reputation. His fists are like thunder and blood stains the ring, but he never gives up. Until one night there was a power outage in the city, and his pupils suddenly glowed with blue light in the darkness - he awakened the power that could swallow up other people's luck. And just when he was about to devour the last person, a cold voice sounded: "Don't touch him." Chu Zhuo stood against the light, his fingertips wrapped around the broken electric chain, and his eyes were colder than the night. It turns out that the power outage was not an accident, but a trap she had set up to wait for him to wake up. One relies on devouring to survive, and the other relies on power outages as an edge. When the gears of fate bite, the entire city becomes a chessboard for their game.