Officials face tribal resistance and a supernatural attack while reopening a tunnel through a mountain that is reportedly cursed.

The group secures the barracks while strange deaths and disappearances continue; Sirohi presses Puniya for the truth about what's happening.

A squad member is possessed by the spirit of an evil colonel; the zombie army approaches as threats grow inside the now-defenseless barracks.

Sirohi runs the risk of succumbing to the colonel's deadly commands; the survivors head to Betaal Mountain for the ultimate battle against the curse.