The protagonist Weiwei meets Xiao Ran, a handsome and elegant senior brother, and falls in love at first sight and is unable to let him go. Weiwei accidentally discovers that Xiao Ran is the husband of his best friend and senior sister Ke Lan. On the road of love, the innocent Weiwei accidentally encounters a hidden reef of love, realizes that the world is difficult and people's hearts are unpredictable, and finally finds peace.