So after Huang Yu Xuan sacrificed herself in the ending of the 13 episode drama, she was reincarnated and eventually met Li Zi Wei again as a young girl.

In the movie, the reincarnated Huang Yu Xuan grew up and reunited with Li Zi Wei again. Not knowing that they already had a “past” as all vanished into thin air because of her sacrificed, they managed to fall in love again. During these part, Mo Jun Jie and Li Zi Wei are still bestie but Chen Yan Ru was uncontactable.

However fate starts to repeat itself again. Li Zi Wei died in a accident leaving Huang Yu Xuan in despair.

There was a new character i guess? Suddenly became Yun Ru husband and when her husband reads Yun Ru diary about going back to the past, he was not able to do it and eventually he let Yun Ru (who is in comatose state) listen to the cassette tape and she went back to the past which eventually she died there again claiming that everything is her fault and she and Yu Xuan should vanished. Thus in real life, Yun Ru who was in comatose state, eventually died

Fast forward, the cassette tape belongs to Wang QuanSheng bestfriend who died because of sickness. The whole thing started from the cassette. Letting it go, they decide to officially burn the original cassette away.

The confusion is when all 4 characters meet. The death differs from Li Zi Wei timeline and Huang Yu Xuan timeline. They are literally in the parallel world and no matter how they time looped they can’t save each other.

What makes this drama a official “goodbye” is that when Huang Yu Xuan cried saying that no matter what she just can’t save anyone and which then Wang QuanSheng said, “atleast this time I get to say goodbye”. That broke my heart apart

Everything just got reset and everyone is alive with their own love and friendship at their own timeline