Socialphobia

Ji-woong and Yong-min prepare to take exams to become a police officer. They become upset with someone with the online username of Re-Na, because of her vicious comment left on an online article about a soldier's death. They then search out her real identity and discover her real name and address. 9 people go to her apartment to receive an apology. They also stream their surprise visit online. When they arrive at her home, they are in for a surprise. (AsianWiki)