After receiving a panicked call from a man lost in a foggy ravine, Rescue are flying blind as they try to reach him. Meanwhile, Chase, Jordan and Heidi struggle to find the man's wife, and the LifeBlood chopper tasked with helping them is useless. Out on another job, Jordan and Chase are drawn into the middle of a paintball fire-fight as the owners of the range stalk each other for the right to decide the course of their business. When both men are left fighting for their lives it's a lesson in the fruits of a partnership turned toxic.