Eighteen-year-old aspiring painter Eliza Harper doesn't believe in hell. When she wakes up in the middle of surgery, however, she learns just how wrong she was.

After attending a party with her three best friends, the night ends in a terrible accident that puts Eliza on an operating table. Awake yet paralyzed, in a condition known as anesthetic awareness, Eliza leaves her body and begins a desperate search to discover the fate of her friends.

Though unable to make herself seen or heard, Eliza still experiences a journey unlike any other. Torn between life and death, Eliza begins to understand the importance of the people in her life—and what it really means to love unconditionally.