After her parents divorced, LuYang moved to live with her mother’s best friend, living with her daughter-SuGui. Sugui is radiant and gentle, like the sun in winter, enthusiastic without exaggeratious, like the moonlight illuminating LuYang’s life, and also easily attracts her heart. To LuYang she’s like a sister, a friend, a mother…After that, LuYang doesn’t want to be her sister anymore, but wants to be her lover. But when she found out about his feelings for SuGui, LuYang didn’t want to lose the harmony between them, even more afraid that the “younger sister” identity is no longer and can only endure the retardation, extending the distance with SuGui. But because of the problem of meeting SuGui again at work, long-suppressed emotions rise, like a branch of roses, wrapping her and SuGui together. Is it premeditated or fate….