Shen Xiyu didn't expect to meet Xiao Ran again after three years. The heartbeat she had in high school had been dusted for a long time. What would happen if it was opened again? She became friends with other people's girlfriends, so she continued to bury it... But many things would eventually be exposed, how did she choose?
And what about Xiao Ran in this story? Who is whose guest? Who misses whom?