Jung Joon-gyo

An uptight student must work with the hotshot designer he wronged during an earlier school project. But past conflict soon gives way to romantic tension.

There are 'dogs' that target Koreans while they're on vacation abroad. Hyeong-sin and Ji-hoon kidnap and kill these people without a drop of guilt. While they are in Korea for a period of time, the family of the people kill chase after them like dogs that never let go once they bite. Doo-jin, who is abandoned by Hyeong-sin's gang, kidnap a new victim alone. A middle-aged woman tracks down Hyeong-jin's gang to find her son who went missing during his vacation. However, the victim and kidnapper are tangled in many complicated ways...

Chu Sang U, a strict computer science student, clashes with design major Jang Jae Yeong after removing his name from a project, leading to unexpected sparks.