Yu, a freshman, meets the charming senior Lanshi, and the two are quickly attracted to each other.Lanshi not only works in a design office, but is also an accomplished maintenance technician. He shows deep affection for Yu, but behind it lies the entanglement of the past.

On the other hand, Yu's good friend Xiao Kuai also carries the hurt he suffered in his past love and falls into a complicated emotional entanglement between Lan Shi and his old lover Feng Mo who reappears.At the intersection of friendship, love and past trauma, they gradually come face to face with each other's hearts.