Imagine a world where your destiny has already been decided...by your future self.

It's Callie's seventeenth birthday and, like everyone else, she's eagerly awaiting her vision-a memory sent back in time to sculpt each citizen into the person they're meant to be. A world-class swimmer. A renowned scientist.

Or in Callie's case, a criminal.

In her vision, she sees herself murdering her gifted younger sister. Before she can process what it means, Callie is arrested and placed in Limbo-a prison for those destined to break the law. With the help of her childhood crush, Logan, a boy she hasn't spoken to in five years, she escapes the hellish prison.

But on the run from her future, as well as the government, Callie sets in motion a chain of events that she hopes will change her fate. If not, she must figure out how to protect her sister from the biggest threat of all-Callie, herself.