I was kind of predicted that Joon-Ho (Jung Hae-In) would deserted the ARMY from how he doubted himself on Season 1. So, it was predictable but with different angle to solve run-away soldiers or continual problem of the system. Basically, the change won't happen when the upper level officials keep blind eyes. When bullying persists and officials close their eyes to the suffering, soldiers bond to give up and one result is running away from the bad situation they're in. It started when a soldier Kim Ru Ri killed the whole squad in shooting spree, injured many and killed a few. He got caught back under security but found out Army covered the incident with possibly wrongful time decease - for the fact few more were died due to delaying rescue because of bureaucratic system of chain in command. Ahn Joon-Ho had the UB-file to prove the wrong doing, being chased by the people to hand down the evidence. He maneuver people around him to win the on-going case in court, got beaten up.

Not as many Deserters as the first season but more horrific plots. If Season 1 & Season 2 combined was more likely one regular Korean drama, The development of the characters were evolving, Joon Ho's supervisors matured in handling crisis, took risks to prevent the system's mistakes. There's an indication that might have Season 3 as Han Ho-Yul leaved ARMY for good while Joon-Ho was still continue his service. Jung Hae-In was great maintaining his charm in boyish tough look. I think he looked better in here than any other of his dramas. Little comic added lightness to this drama....