One hour from paradise. One breath from the end of the world. Lucy King is counting down the minutes to the trip of a lifetime when an act of bioterrorism rips her world apart. In a matter of hours, billions are dead, and the streets outside her high school erupt with looting, gunfire, panic, and chaos. Trapped inside her high school with a handful of terrified survivors, Lucy feels safe from the growing terror. But the real danger might be within their walls. As resources dwindle and a power-hungry principal seizes control, Lucy discovers terrifying family secrets that could rewrite everything she thought she knew about her life. Survival was never the plan. But if Lucy can't uncover the answers, survival may not matter at all.