When the swimming competition is coming, Wen is under lots of pressure, so it's gloomy this summer. Ann, who is inseparable beside her, found out something different. To confront Wen’s closure and trauma, Ann decides to be closer to Wen. But, when she gets closer to Wen once, it pushes them further.

On the last night of Mercury retrograde, the gang rookie Hao suffered a series of accidents and was forced to assassinate his benefactor. Hao blamed all this on Mercury retrograde, and hoped that Mercury retrograde would pass quickly…