A talented martial artist who can’t walk past a person in need unites with a probation officer to fight and prevent crime as a martial arts officer.

Aging assassin Hornclaw has seen it all, but she never expected to mentor a reckless rookie like Bullfight. As their unlikely bond deepens, cracks form in the underworld they navigate…

A corrupt prosecutor plans for revenge against Hyun-jung’s crime organization by using her loyal partner, Sang-hoon.