I don't know who pitched this drama to being produced but I can't believe I sat through 30 episodes of this drama, season 2 is simply a continuation of season 1 since the mission is for Xia Mi to find Le You's memories. The summary however isn't really correct. Le You is supposedly a "ghost" that doesn't have memory of her death. The reason to why Xia Mi was the chosen one to finding her memories is because she was in fact a witness to the death of Le You. If you thought it's just a simple story about a girl who helps a ghost solve her death, it's not. The superstar in the drama was technically someone that the "ghost" seduced in Xia Mi's body, he's not really important in the story until the end. This mystery is only related to him only because his brother was doing some shady things that led to Le You's death.

If you want a fluffy cute romance, it's not happening, horribly written story.

P.S. Xia Mi has schizophrenia and double personality disorder due to PTSD witnessing Le You's death, so Le You was not really a ghost that popped out of nowhere and decided to play.