Olivia Robertson has a life that any rational teenager would envy. Her best friend, Emma, and her are inseparable, and she has a tolerable relationship with her twin, Tyler. As spring break of their junior year approaches, the twins, Emma, and Tyler's best friend, Liam, plan to spend it together at the beach. For Olivia, her life is a river that flows with joy and happiness, but eventually that stream will cease to flow. When tragedy strikes, Olivia is left broken and unable to tread the treacherous waters of her life. As waves of grief wash over her, Olivia knows she is sinking, but she gives up on trying to swim to the surface of her inner miseries. Liam, Emma, and Tyler try to help her, but will they be able to pull her out?