After spending all her life trying to be normal, Nova gives up. She isn't like everyone else. When a recent break-up highlights her limitations, the crushing realization drives her deeper into work. Content in her private world and with no desire to change, she finds herself pulled into a mission that takes her away from her safe and secluded life.

Arrow has been trapped in a cage for, well, he can't recall, but he is ready to be free. As the water base crumbles around him, he fears his chances of getting out alive. When his "Angel" appears, she's what he's been searching for all his life, and his soul knows her. But his angel doesn't know who he is, nor does she care, and she resists helping him.

This unlikely pair starts an alliance, and a train ride alters them forever. Before long they will uncover the dark past that hunts Arrow, and the even darker future that awaits them both. Life for Arrow is about to become real, and for someone as crazy as Nova, this one man turns out to be the stability in her unpredictable world.