Sheng Weiyang died, and she thought she had brought it on herself by being stupid. She hadn't seen through people's hearts or been able to tell good people from bad. Just like that, she was caught up in an undeserved disaster and lost her own life, while her parents and family lost theirs as well.
Different choices, different endings. Does every choice create a parallel world?
Perhaps Weiyang was lucky to be chosen as a mission-taker. She gets to experience all kinds of lives and has a chance to start over. As she slowly lives through them, what is the meaning of her existence, and where does her future lie?
Transmigrating into different people and completing missions, helping others turn their lives around: isn't that also a way to turn her own life around?