Teach You a Lesson

SERIES

Let us protect you!

★ 9.4/10 2026 1 Season 15 Action & Adventure · Drama · Comedy

An inspector from the Educational Rights Protection Bureau (ERPB) who is authorized by the government to use physical intervention and unconventional methods to discipline delinquent students and reform the educational system.

Coming to Moolo soon. Watch the official trailer now.

S1 E1 Episode 1

5 Jun 202652 min15

Inspector Na Hwa-jin steps into the chaos and takes control of a school plagued by the spoiled son of a powerful politician — to teach him a lesson.
S1 E2 Episode 2

5 Jun 202657 min15

With unassuming Bong Geun-dae on his side, Hwa-jin uses his special ops skills to handle a school gang and defend a student who just wants to study.
S1 E3 Episode 3

5 Jun 202672 min15

When a teen influencer spreads false claims about her teachers, the team's loose-cannon Inspector Im Han-rim steps in to set the record straight.
S1 E4 Episode 4

5 Jun 202668 min15

Choi Gang-seok weathers a political attack on his bureau. Hwa-jin's team visits an elite school to uncover why a student attacked a respected teacher.
S1 E5 Episode 5

5 Jun 202666 min15

When an elementary school teacher's spirit wears down under pressure, Hwa-jin steps in to be her substitute — turning the tables to solve the case.
S1 E6 Episode 6

5 Jun 202669 min15

Four juvenile delinquents think they're above the law — until the team takes an interest in their extracurricular crimes and gives a harsh reality check.
S1 E7 Episode 7

5 Jun 202664 min15

Geun-dae goes undercover to help a father find his gambling addict son. To undermine the bureau politically, Hwang Gi-tae visits a juvenile inmate.
S1 E8 Episode 8

5 Jun 202660 min15

After a pre-med student collapses in class, Hwa-jin investigates his obsessive mother, whose access to illicit pills hints at a larger conspiracy.
S1 E9 Episode 9

5 Jun 202667 min15

To help a student escape his exploitative friends, Han-rim adopts a new persona to join his circle. Cho Gyu-cheol's return puts the bureau in danger.
S1 E10 Episode 10

5 Jun 202661 min15

After public backlash hits the bureau, Hwa-jin and his team go rogue to expose a deadly conspiracy led by a violent student-run gang.