Yeonjun is a student at Seoul National University in Korea. He is having a great time as a student:, visiting bars and clubs in Korea and posting on Instagram. Yeonjun likes a girl at university named Sunmi.

But Yeonjun is just trying to get closer to her. On the other hand, Yeonjun has a best friend Beomgyu and there is a secret between them. While Yeonjun is trying to get Sunmi's attention, he is sleeping with his best friend without any strings attached. They are friends with benefits.