The Greenburg Timelines: Prisoners of Utopia

Cole Greenburg wanted nothing more than to see his father one last time before his deployment to Iraq. Jessica Fulton was a semester away from earning her doctorate in astrophysics and attaining a promising future with NASA. Michael Greenburg was close to completing his life's work on his theories of multiple universes when his device sent the trio out prematurely, leaving them to wander the alternate Earths aimlessly.
Their one hope to get back home and resume their normal lives lies with a world more advanced than their own. On an alternate Earth where the Ancient Greeks still rule and Natives still dominate the western world, technology has placed society on a course for self-destruction. Their hope lies in expansion and Michael's hopper promises to open up new worlds. In exchange for access to other, uninhabited, alternate Earths, the Greeks offer a path home; but as the group realizes this advanced world is not the utopia they believed, and the people are not the altruists they presented themselves as, Cole risks everything to fix their mistakes while his father tries to open the door for them to leave before their time runs out.