Ordinary office worker Kim Moon-sik is wrongfully disgraced at work—and then discovers his wife's affair. Having lost everything, he sets out for revenge by preparing for a fair and square 1:1 boxing match against his wife's lover, who also happens to be the company's executive director, Go Hwan-bin. Through grueling training and battles with himself at the "Love Fight Club," he climbs into the ring to reclaim his pride—and maybe even his love.
