In the end, very few people made it to the bunker. Now they wait there for the outside world to heal. Wolfe is one of the lucky ones. She's safe and employed as the bunker's pharmacist, doling out medicine under the watchful eye of their increasingly erratic and paranoid leader, but when the leader starts to ask things of Wolfe, favours she can hardly say no to, it seems her luck is running out. Forming an unlikely alliance with the young Doctor Stirling, her troubled assistant Levitt, and Canavan - a tattooed giant of a man who's purpose in the bunker is a mystery - Wolfe must navigate the powder keg of life underground where one misstep will light the fuse.