In the four years since he traveled through time to save the world, Quinn Black has settled happily into life as a new space race billionaire, despite the fact he's no longer able to travel or loop time. But before long, things start to go horribly wrong. The system he created to save the planet mysteriously begins to malfunction. His team receives a cryptic message, and he's hurled back into the past once again...but with a twist. Now, instead of trying to go back in time, he's desperate to travel in the other direction and get back to the future. As he joins forces with a young Dr. Green to help him find his way back to 2025, Quinn discovers a sinister plot, one so complex that Quinn may not be able to unravel it. Now Quinn must change the course of history once again, or risk erasing his own.