Non Zero Sum

“I thought we liked each other.” The only light in Yoon Haewon’s life, who has no money, family, or future, is Seo Haeyoung. Haewon, who has been hovering around Haeyoung for a long time, can’t hide his feelings and gets caught by his friend Ko Taegyeom. With Taegyeom demanding a relationship with Haewon using that as an excuse and the addition of another friend, Ju Hyunwoo, who coveted Haewon, Haeyoung’s suspicions arise… The three people who watch and condone the violence and abuse towards Haewon. There is no one to help him. The broken relationship between the four people, And the memories of the past that have now faded. Who will be the winner in this irreversible game?