Kim Minji's mom, kim hyonjung, was a victim of a murder crime. in order to get a revenge for her, minji went in hankuk university as a professor. Pham Hanni is the primary suspect for the said crime. she will do anything to prove her innocence and the only way for that is to win minji's trust. however, minji got a mission from her dad. "make her fall in love with you, make her suffer and .... kill her". but kim minji developed her feelings for hanni. how is she going to do her revenge?

What would happen if all five of them went to the same university? They entered college life thinking studying will be the only thing they would encounter, but it turned out to be more than that. When the university owner's daughter seems interested in Haerin, Danielle finds herself exploring a feeling that is foreign to her, jealousy. Meanwhile, Minji wants to take her relationship with Hanni to a more intimate level. And Hyein's dorm mate makes the girl question her life choice to just be single and have fun.