A story of secret love and being secretly loved, a love affair that will eventually be echoed. The male protagonist Xu Mochuan is like the sun, illuminating the closed heart of the female protagonist Zhen Yiluo. When Yiluo becomes confident and cheerful, and dares to express her feelings, her sun disappears from her life. Time flies, many years pass, and they meet again. When Xu Mochuan appears in front of Zhen Yiluo again, is it God's will or man-made, what kind of story will happen between them.