A story about blood type. Liu Huang was only ten years old at the time. This episode in his life was forgotten by him as the years went by.
Liu Huang thought that he would live an ordinary life. The cheating and divorce of his friends and colleagues were thousands of miles away from him, but he did not expect that it would happen to him in the blink of an eye. Slowly, he would step out of the shadows and get a new girlfriend. However, he did not expect that one accident after another would overturn his world and set him on a path of no return. He never thought that the girl who accompanied him through the hard years was the girl in the story back then. He wanted to protect this injured girl... But he was already a hundred years old.