The last ship to leave Earth is in lockdown and controlled by the corrupt Challenge Command. Chief Solomon Reach and his Reacher crew hatch an insane plan to take back the ship. First order of business: survive. Second order of business: launch the ship and make it to Sideris Gate, the wormhole that will deliver them to the planet New Eden in the Andromeda galaxy.
If only it were that easy.
If Solomon fails in his mission, Challenge Command will leave three thousand of his crew to die on an apocalyptic Earth.