Deep in the heart of a remote jungle, ex-special forces soldier Ant Middleton and five expert engineers are stranded in a simulated crash site where a flash flood has caused vehicles to fall into a crocodile-infested river. The engineers, three women and two men, salvage parts from the wrecked vehicles and, using only the tools they can scavenge or fabricate, must create a new vehicle that's powerful enough to take them all to safety. The engineers are confident they can overcome the challenges, but as the brutal conditions take their toll both physically and mentally, building a boat to navigate the jungle waterways starts to become an overwhelming task.