A memorial service for Fei Ke (Jing Boran) brings together female journalist He Shan (Zhou Yiran) and four strangers who are invited. They all share undisclosed pasts with Fei Ke, but they discover that the Fei Ke they knew is not the same person. Who is Fei Ke really? As they look back, the group gradually uncovers the truth about Fei Ke.