A female lead named Eun Yuna enrolled in her dream university which is called Haven University. Throughout her first day at University, she have crossed path with the one and only gangster of the Haven University, Kim Sunghoon, the only son of the owner. In an unexpected moment, the day she thought she would never get to experience came hitting her like truck and that was being kissed by some random guy infront of many people. Who did that to her? It's the gangster himself, Kim Sunghoon. It was part of a dare that he just made with his friends and it happens that it was Yuna whom his friends randomly pointed at. He accepted it without hesitation and to his surprised, the girl he just dared to kiss was the only girl who could dare to fight him back. As day goes by, the querrel between them gets stronger but in every fight they had, they cannot deny that pull of attraction always get to them and because of those enigmatic feelings of them it slowly leads to anew start and became friendship. But where would be this new build friendship could bring them?