Taek-rok has conflicts with his team leader Yeon Ju-hyun. Seong-a struggles in a juvenile theft probe.

Seong-a gets injured, and Taek-rok tries to uncover the truth. Meanwhile, Gyeong-chan doubts Taek-rok.

Despite Taek-rok's caution, Seong-a pursues probing and ends up getting injured. Meanwhile, Taek-rok meets his old colleague Do-hyung.

Taek-rok reaches out to Lee Young-ho, who is jealous of Do-hyung. Taek-rok stops Seong-a from uncovering the arson case and discovering his secret.

Taek-rok manages to identify an unknown skilled armed force with the help of Team Leader Han's testimony and devises a plan to lure them out.

Despite feeling helpless in the face of his enemies, Taek-rok finds motivation in the determination of those around him and continues his pursuit.

Taek-rok faces his past that he has been shunning and delves into the root of the problem. He is determined to protect his loved ones at all costs.