Miranda vaknar upp med minnesförlust och upptäcker att hon har skrämmande krafter. Hon och andra tonåringar har tränats till levande vapen, kraftiga nog att kunna ödelägga hela städer, och det blir svårt för henne att återanpassa sig till sitt gamla liv. Snart upptäcker hon än mörkare hemligheter och tvingas på flykt.
   Miranda wakes up alone on a park bench with no memory. In her panic, she releases a mysterious energy that incites pure terror in everyone around her. Except Peter, a boy who isn't at all surprised by Miranda's shocking ability. Left with no choice but to trust this stranger, Miranda discovers she was trained to be a weapon and is part of an elite force of genetically-altered teens who possess flawless combat skills and powers strong enough to destroy a city. But adjusting to her old life isn't easy - especially with Noah, the boyfriend she can't remember loving.
   Then Miranda uncovers a dark truth that sets her team on the run. Suddenly her past doesn't seem to matter, when there may not be a future.