A phone call brought Jianyang back to his hometown. Thirteen years later, standing at the place where they first met, memories of the past came flooding back, and the memory of his lost lover Xiaonan also awakened; at the other end of the story, Xiaoxue, a terminally ill high school student, made Ji Mei, a doctor, seem to see her stubborn and forbearing self more than ten years ago. She wanted to help Xiaonan. Xue fulfills her lifetime wish while trying to get rid of her obsession with Jianyang; the humorous Datou will also take off his disguise when no one is around, flash back to the past, and unlock the secret that cannot be revealed to others - the fragments of his youth are gradually pieced together in their respective memories, completing the confirmation and memorial of that youthful love.
After peeling off the cocoon, the foreshadowing of time was buried so secretly and long; with twists and turns, lonely hearts were ignited again.