Ep. 1 Tae Il is frustrated by her girlfriend's endless obsessions.

Ep. 2 Ji Won is sad when she's left out because her best friend gets a new boyfriend.

Ep. 3 Hye Joo can no longer keep her feelings for her old friend Sol to herself.

Will things ever go back to the way it used to be when everything was simpler?

N/A

Hee Ram and Ga In met in a general education class, Psychology of Love and Sex class. In this class, students have to perform a dating mission as a mock couple. A hard-working student Hee Ram and an easy-goer Ga In don't quite get along with each other from their first meeting.

The story follows a team of investigators from the Organized Crime and Triad Bureau (OCTB) unit of the Royal Hong Kong Police Force.