Experimental Injections

When a teenager signs a contract to help others, she gets taken to a lab and becomes a test subject for a series of injections that aim to give humans a tolerance to the harsh conditions that they could face if the world succumbs to severe weather. When the injections go wrong. It can be a matter of life and death. But when they go right... Will lives be saved? Or will the injections create a race of humans that cannot be defeated?