The butterfly effect is over. Butterfly Effect is a fantasy novel by Zhao. The author posted the last chapter of the novel on QQ on 202 1, 10 and 19, and didn't finish it until September 2022. It's about Nick and his friends celebrating his girlfriend Julie's birthday in the suburbs. On the way back, there was an accident. Julie was unfortunately seriously injured and died. Nick was very sad. One day, Nick found that he could go back to the past story by looking at old photos.