Xia Wan and Boyan Yi, one is a sweet girl who is as warm as the rising sun, and the other is a scholarly boy who is as cold as the bright moon. They have been together since childhood, and in countless long summer nights with the cicada chirping, they quietly buried their hearts and promises. That unspoken love is the most precious gift that time has given to each other.
However, a sudden business conspiracy crushed all the good things. The Xia family was ruined, and all the evidence pointed coldly at Boyan Yi's father. With huge pain and irresolvable misunderstanding, Xia Wan cut off her love and left for a foreign country. In Boyan Yi's view, her decisive departure was just a ruthless abandonment. The people who love each other are trapped in the cage of hatred and misunderstanding, facing each other across the sea, each in despair.
Five years later, Xia Wan returned from nirvana, but lost all his memories in an accidental car accident, including the unforgettable love and hate. Her memory was stuck on her best childhood days, and she called him "Brother Yan Yi" dependently. Boyan Yi's heart that had been frozen for five years was throbbing again. He was greedy for this lost dream and was determined to hide the past and seize this opportunity to come back.
When the sweetness of amnesia once again evolved into passionate love, the gears of fate turned ruthlessly again. After Xia Wan has recovered her memory, how should she make a choice when faced with the man who "cheated" on her and the overwhelming hatred from the past? And how can Boyan Yi, who finally got a glimpse of the truth, clear away the fog and save the lost time and love?
This is a competition about love and hate, forgetting and remembering, misunderstanding and forgiveness. Can they overcome the grievances between their parents and the gap of time, and rekindle love on top of the ruins?