Chaewon originally thought they were leaving early in the morning but it seemed like Hyejoo wanted a late-night drive.

Hyejoo doesn't see the point in living. The world is a cruel place to be in. Jiwoo and Sooyoung cannot handle it anymore and decided to introduce the younger to a friend. Little did Hyejoo know about the impact that person is going to have on her life.

The love formula is supposed to be simple but Hyejoo complicated the equation and added a new variable, her unrequited love, and tries to solve the problem painfully.