In 2145, the world's top sports event "Ultimate Fighting League (UFL)" was manipulated by capital into a gambling tool. Scandals occurred frequently, including referee blackmails, players fake matches, and even assassinations of real players. Retired boxer Lin Ye was involved in the whirlpool due to the murder of his brother, and investigator Cheng Yan was ordered to "rectify" the league. One of the two wanted to uncover the shady story, and the other wanted to collect evidence. From cheating each other to joining forces, they used their fists and IQ to fight against the entire corrupt empire. Of course, in the process, Lin Ye was always annoyed by Cheng Yan's arrogant remarks, and Cheng Yan firmly denied that she secretly stuffed bruise ointment into his workstation.