Mr. and Mrs. Kim live in Seoul and they have two daughters, Jisoo, who is an adopted child, and Jennie. Jisoo is simple and dutiful, whereas Jennie wants to become a Kpop star. Jennie is headstrong and selfish. Jennie and Jisoo share a great bond, that's until they are introduced to a boy named Tao. Tao's father has a great expectation from him and he falls in love with Jisoo. But fate wills otherwise, and his father makes him marry Jennie. The story takes a dramatic turn when Jisoo enters Tao's household, and the stage is set for an unusual love triangle, with each person grappling peculiar dilemmas.