After falling in love, Lena and Alex flee their oppressive society where love is outlawed and everyone must receive "the cure"--an operation that makes them immune to the delirium of love--but Lena alone manages to find her way to a community of resistance fighters, and although she is bereft without the boy she loves, her struggles seem to be leading her toward a new love.

Lena looks forward to receiving the government-mandated cure that prevents the delirium of love and leads to a safe, predictable, and happy life, until ninety-five days before her eighteenth birthday and her treatment, she falls in love.