Xiaobai is an adopted child.
He fell in love with the host's child, Xiaoyu, but Xiaoyu fell in love with another man, Xiyun.
Later, in an accident, Xiyun was injured and Xiaoyu underwent surgery to lose his memory.
Xiaoyu changes his sexual orientation and falls in love with Xiaobai, but Xiaobai no longer loves Xiaoyu. When he goes out to work, he meets Xiyun again...