Shen Jiahe, a girl from the countryside, has a deep relationship with Fang Xiaoyu, the only son of a wealthy family, but Fang Xiaoyu's mother Fang Yufei regards her as her enemy. Jiahe never knew the reason. And under her kindness and some special state of mind, she walked together with another sunshine boy. But at that time, Xiaoyu already had a girlfriend (Chu Yunqiao). Xiaoyu could never let go of Jiahe, but she couldn't bear to disturb her current life, so she stayed away alone. Fang Yufei found Jiahe and asked her to find Xiaoyu and come back. Jiahe was very conflicted, but went anyway. But, in the vast sea of people, where was she going to find it? Just when she was about to give up, Fang Yufei told her that Xiaoyu's illness had relapsed, and only by finding him as soon as possible could she have a chance...