Three years ago, the long distance made the love between He Xinyu and Ren Jiangyu unfortunately come to an end. Three years later, she resigned and joined the community library, living a slow-paced life, only to find that her new neighbor across the door was actually him. Ren Jiangyu fills the gaps in the past with tender details: night lights, breakfasts, and invitations with hidden premeditations, turning the unspoken concerns of the year into companionship within reach. The two untied the old knot in the daily fireworks, and finally embraced the two-way love again in the third year of separation.