When every citizen of New York turns twenty-one, they must make an important decision; to change something about their lives, no matter how it impacts others. They can change a memory, an event, or a feeling, but they cannot take a human life. This decision is mandatory, and non-compliance means facing banishment from society; forfeiting the ability to buy and sell goods. On the morning of Angelina's 21st birthday, authorities break down her door and demand her decision, when she is suddenly whisked away by a stranger. Angelina is then thrust into the underground world where rebels fight for their right to maintain freedom of choice. But how long will this world last without the basic structure of modern society?