She calls it home. He calls it a prison. Serenna has spent her whole life performing for visitors at the Blue Lagoon Aquarium, believing she was saved from a deadly storm and given a second chance at life. But everything begins to crack when Finn, an injured merman, is brought into her tank as her new roommate. Unlike her, Finn is certain of one thing: they are not safe-they are prisoners. And he's determined to escape. As his truth collides with her carefully built reality, Serenna is forced to question everything she's ever known. How long can she believe the sweet lies of the Blue Lagoon... before the glass finally breaks.