In the 25th century, deep under the Earth's shattered surface, the dying remnants of humankind live in a dwindling Colony devoid of Nature and are desperate for a way to change the past. Humanity's future rests on the unlikely shoulders of Proteus. Born with a unique genetic mutation, scientists discover that he is the only one capable of surviving the ravages of time-travel. After decades of preparation, Proteus is sent backwards to early 20th century London to disrupt the science that ultimately led to nuclear weapons ... but Time doesn't want the past to change and it pushes back.