Join Calli and her sisters, Coral and Sealina in a tale of balance and secrets. Owning a marine park is all fun and games, especially when no humans are around, the tanks only ever house rescue marine life, and when they recover they get to go back to open seas, each tank is huge, and deep enough for any aquatic creature, the girls love what they do and would never change their lives. That is, until one day trouble arrives in a most devastatingly surprising form. Do the girls have what it takes to overcome this hurdle? Will they work together as a team or will they fall apart?