Leaves fall and sink into the sea Luo Ye and Chen Hai are childhood sweethearts who have played together since they were born. They have walked together through spring, summer, autumn and winter, leaving behind shared years in their memories, but they have unknowingly discovered throbbing emotions. They are timid, hesitant, struggling, trying desperately to escape, but they can never escape from the cage in their hearts. But gradually, their growth has made them move from ignorance to maturity, from cowardice to bravery, and they will eventually face the sincerity in their hearts.