An Jun-ho's keen eye earns him a position in the Deserter Pursuit unit. On his first mission with Park Sung-woo, things don't go quite as planned.

Jun-ho and Ho-yeol receive unexpected praise from the military. They later set off to catch a deserter who was bullied relentlessly for being different.

Jun-ho discovers the extent of the military's secrets — making a critical decision. Oh Min-u pursues crucial evidence to stop it from being released.

Ho-yeol makes a deal to help Jun-ho, who faces harsh consequences. In a fight for justice, the trial against the government takes a surprising turn.