Every year, summer comes as promised.
But the summer of 2017 has passed and will never come back.
They met for the first time, became acquainted, and fell in love, but Yu Chen suddenly left without saying goodbye.
When they met again six years later, Yu Chen, who was already a first-line singer, wanted to find Jiang Yi, whom he had lost in school.
But Jiang Yi told him that Jiang Jiang, who only had Xiao Yu in his eyes, would stay in that summer forever.
Intention: Study hard and make progress every day.