Walker, Titan's newest recruit, has been sent to rescue Nadine Kincaid, DARPA's scientist working on a special state-of-the-art exoskeleton for COS Command's Super Soldier Spy Project. Instead, the kidnapped Nadine turned out to be Nadia, Nadine's twin sister, who has been protecting her sister all along. Nadia is perfectly capable of taking care of herself and Walker's sudden appearance just added more fun to her adventure. Stuck together, the two of them now have to work together to keep the newest exoskeleton blueprints out of the enemy's hands. Get ready for a wild ride!