Fanruo, a boy in white who is trapped in a dark past, meets An Xingyu, a boy in black who is bathed in the sun. The young man in black stretched out his hand to Fanruo, his neat teeth showing a bit of white. An Xingyu was like the young man a few years ago, giving him sunshine-like salvation. The young man's loose white clothes were blown by the wind, but in front of him was endless darkness.