Undercover cop, Jung Jaehyun once never imagined himself being stuck between personal feelings and his own job. But, after meeting professional dance teacher Lee Taeyong, he doubts his perseverance to finish the mission, especially when Lee Taeyong himself was once tangled in the case he's forced to investigate.

Lee Taeyong is a storm that Jaehyun is forced to live under.

After an embarrassing incident, Jung Jaehyun was forced to resign from his position as an English teacher at a rebellious, yet prestigious high school. Moving on to a new job, Jaehyun becomes an undercover cop, forced to return to his old roots at the high school to discover the underlying truth of the high school's drug deals.

There, he clashes with the newly hired history teacher, Kim Doyoung who tries to boosts the students' confidence by hiring a professional dance teacher, Lee Taeyong. Discovering Taeyong's past with high school drug deals, Jaehyun takes an interest in the man.

However, Jaehyun needs to complete this mission without having personal feelings spoil everything.  Jaehyun feels like he can't do it.