After their Uh-6 Littlebird crashed in the Rocky Mountains, Team Sierra Delta is rescued by a Canadian sniper team who was investigating possible terrorist bases in the Rockies. Unfortunately, Sierra Delta is stuck in the Rockies, because where they landed, the hike down could kill them all, their pilot is dead, so there's no hope of flying out, and the Canadian snipers are on radio silence. Now, Sierra Delta must help the Canadian snipers to prove or disprove the terrorist bases in the Rockies.