"The Rebellion faces its darkest hour"--Page 4 of cover.

"A hostile world that will doom the human race ? or save it, if a few survivors can unlock its secrets ? After waking up with no memories in an underground facility, a squad of elite soldiers and scientists must try to recall what their mission is. But first, it's a race against the clock to escape their collapsing bunker before it becomes a tomb. Topside, an even more dangerous world of fiery skies and desolate terrain awaits. As they venture out...