The Defenders have to fight for their lives, and their world, on a daily basis. Whether it's to defend against insatiably hungry mutations that don't feel pain, or the well-meaning but ignorant Linears, they cannot rest until peace reigns. They have been fighting for so long they are not sure whether peace will ever be possible again. When a young woman arrives, claiming to be sent from the future to help them, the Defenders must determine if this is just another trap.