Senior agent Lu Chengfeng traveled through the parallel world in 2000 and started his undercover career after dropping out of school. He used ruthless tactics to attract Lao Hei, and gradually rose to become the core of the gang. During this period, he played a game with his superior Han Liming and faced the threat of the Sang Dacheng brothers. He finally defeated their conspiracy to collude with foreign forces and took charge of the chess game in the dark.
