Minho's Dad and his Mistress died in an accident leaving a small child. Minho's hate towards his father runs deep. But when their entertainment company was put at risk due to intrigues surrounding his Dad's death, he needed to look for that love child and his guardian. But the child's guardian who is also the mistress' sister is not someone who bends to just anybody's wishes. She loves the child as a real mother and she will do everything to protect the child. Will the hate keep Minho and Sulli away from each other? They said there is only a hair strand difference between love and hate. Will that hair strand break?