A 16-year-old girl named Liberty Wells discovered a secret in her new lake house that could change the fate of the earth. Her introverted personality and paranoia are highlighted, along with her mother's newfound relationship with a marine biologist named John. John shares his research on adapting species to survive in polluted water, but there is more to his story. As Liberty and her mother grow closer to John, a strange incident involving his coughing raises suspicions. The story builds up to a surprising revelation about John's true motives, leaving Liberty and her mother questioning their feelings towards him.