Sun Lanyi and Shen Nian were lovers in college. Due to their disparate family backgrounds and opposition from their parents, they eventually separated after graduation. But the two of them still couldn't forget each other in their hearts, and they stumbled on their respective emotional paths. However, reality and reason kept them restrained. Even though they knew it would be fruitless, they both wanted to let go and make each other happy. But fate likes to play tricks on lovers. They are obviously separated in two places, but they meet again by mistake. The relationship that should have been broken long ago is disconnected, and no one can let go and each other suffers.