Lin Yuexi's marriage failed and her husband cheated on her. After the divorce, she packed up her things and wanted to change to a new environment. But among a pile of old things, he found a photo of his crush in college, Song Huachen. Recalling that young but beautiful time, she met her college classmates, and learned the truth from her college classmates. She understood that she ran away from this relationship because of cowardice, and she regretted it endlessly. And that photo carried her thoughts and took her back to her college days...
Concept: youth, campus, city, love, time travel, parallel time and space