Li Ren became a delinquent who did all manner of evil after his father died young. After being sent to juvenile detention, he learned upon his release that his mother had cancer. To pay for her treatment, he joined a game with a huge cash prize. He cleared the first three stages without a hitch, but when he reached the final one, the System malfunctioned, trapping him and his archenemy, Tang Zilin, in Sin City.
