Wherein Wendy noticed how everything between her and her partner, Seulgi lose its spark. The younger thinks that the best way to save themselves is to part ways for a while. It's painful, specially for Seulgi who can't understand Wendy's decision.

Mark was just working in the Vet diligently. Just when he thought that his day will become uneventful like the usual, Haechan suddenly appeared. Once in a while, Mark thought that life has a lot in store for himself. And the younger.

In which Seulgi will enliven the tiny ray of hope in Wendy's heart. 

What happened between a rebellious and self-centered boyfriends. 

That's how lunacy will drive you.