This movie is centered around Lee Jung Do who becomes Martial Arts Officer for the Electronic Monitoring Division of the South Korean Police, partnering with Police officers to monitor probationers. It is a topic that I never really see approached in South Korean fictions, so I found the story pretty innovative and super interesting.

The main character is ultra endearing and touching. I love Kim Woo Bin and I never saw him playing that kind of role, requiring such purity and levity : it was extremely well-done and very nuanced. Next to him, Kim Sung Kyun which might be one of my favorite South Korean actor is doing amazing in the role of the probation officer, partnering with the hero. Their mentor-mentee relationship was one of the best part of the scenario. The secondary cast was very good and supported by good writing: frightening bad guys that are serious and credible threats for the nice guys, in addition to believable friendships and family circle.

The filmmaking was very good with very convincing fight scenes which made my heart fasten as it was pretty brutal and worrisome for the parties involved. The soundtrack was pretty good overall in setting the mood during the action sequences, not that memorable but fitting without overpowering.

I would recommend this to people that are looking for a great and entertaining police movie featuring the department that supervises the probationers. In addition to great acting and filmmaking, there are humor, thrills, emotions and character growth. Be mindful of the tags if you have any trigger, it is pretty violent with sex crimes and crimes against children being part of the storytelling.