Xu Huannian, who is in the late stages of a brain tumor, unexpectedly runs into her ex-boyfriend Xu Yufeng, who has resented her for three years, while buying a burial plot during the Qingming Festival. As the truth behind her memory loss and sudden loss of contact years ago comes to light, Xu Yufeng finally realizes his mistakes and does everything he can to stay by her side and make amends. In the main story, she tragically passes away after a failed operation. In the bonus episode, she recovers and awakens, and the two return together to the peach blossom grove to fulfill a promise they made during their school days, finally finding lasting happiness together.