Best Friend: Daekwon is the team leader of the surveillance team on the verge of getting a demotion. His mission is to be as an unemployed head of a household and monitor the politician's family who's been house arrested right after arrival from abroad for 24 hours a day with his team. Members of the surveillance team, who have moved into the next door disguised as a neighbor, discover secrets one by one, through monitoring all the sounds and behaviors of suspicious family members, from requests for a radio show to midnight rustling noises…