Luna died because Yin Sheng was jealous. Shane Xing was so jealous that she felt hatred when she found out that luna was going to win an art festival trophy for Shaya. In fact, before each singing contest, Yin Sheng relies on special drugs to help himself. The side effects of drugs will make her hallucinate. She always thinks that the trophy is her own, and whoever blocks her will kill her. The effect of drugs made Enxing push luna down the steps, which led to luna's death.

Luna is Wu Yunxi's daughter. In 1 season, Zhou was sent to prison for killing Xiulian, and was later saved by Logan Lee. Logan Lee wanted to save her, because he wanted to avenge his sister and kill Yunxi himself. Because Yunxi was drunk and pushed Xueya down, which eventually led to Xueya's death, Logan Lee has been looking for opportunities to get back at Yunxi.

Xiulian actually knew that Xueya was pushed by Yunxi, but she chose to forgive her. However, Yunxi didn't appreciate Xiulian at first, but teamed up with Zhou to frame her. Who knows this is Zhou's trick, and finally Yunxi was sent to prison by Zhou. Xiulian's death also completely angered Logan Lee, but Xiulian told him to give Yunxi a chance.

Yunxi, who knows who is really good to herself, wants to find Xiulian's killer after the return of Top Floor 2. She wanted to keep luna out of trouble, but luna wanted to help her mother make amends. It was because luna didn't go abroad in time that he finally died.