Graduation season is also called breakup season, and Tan Kaixuan and Zhao Qianqian did not escape it. Loss is a normal part of life, but in love, everyone is a willful child, and losing each other makes us scarred all over. They say time is the medicine that heals all wounds, one goes abroad and the other stays. Five years later, will they turn the wound into a scar and let it slowly fade away, or will they continue to tear the wound and let it bloody remind them of their loss. Will the aborted love become their regret, or can they turn their regret into perfection?