The fallen MMA player Addison (Allen) relies on fake boxing to make a living and has long forgotten his former ambitions. When he was discussing a fake match with the fake boxing agent Ma Dong (Tian Yu), he was accidentally heard and recorded by the sports reporter Ma Xiao (Ma Li) who was full of justice. In the process of chasing Ma Li, Addison and the other party fell into the swimming pool together and were shocked by lightning. When they woke up from the hospital, they found that they had swapped bodies. After all the recovery methods failed, Addison could only ask Ma Xiao to replace him to fight against the boxing champion Wu Liang (Xue Haowen) - who was also Ma Xiao's fiancé. However, the sissy Addison and the manly Ma Xiao made a series of jokes. In the process, the two gradually discovered the truth about Addison's disastrous defeat and the shady dealings...