The male protagonist Shen Yang followed his divorced mother Shen Yun to Bailin City, where he met Xie Zezhou and became childhood sweethearts. He met good friends and formed a small group of four. For some reason, Shen Yang left. The fun the four of them had in campus life became Shen Yang's memories before leaving. They met again because of a phone call from their friend Lin Yuqi, and the two of them met again, and finally ended up happily together.
Concept: Because love is deep, it has echoes