"La robot y los animales de la isla parecen tener una vida perfectabargo, un día aparece una foca herida y da la voz de alarma: se acercan aguas contaminadas. A partir de este momento, todos estánen peligro. Roz calma y organiza a los animales, pero las aguas tóxicas dificultan cada dâia más conseguir comida y hallar refugio. La robot descubre entonces que su cuerpo es impermeable a la marea venenosa y se impone una misión: encontrar el origen del peligro y acabarcon él. Para cumplir su objetivo, hará un emocionante viaje submarino, donde encontrarâa paisajes y criaturas increíbles, aunque amenazados por la devastación. ¿Podrá Roz salvar el océano, la isla y a los seres que ama o la marea venenosa acabará con ellos?" -- Provided by publisher.

"Life for Roz and the animals on their island is perfect: wild, natural, harmonious. Her son Brightbill has even found a mate! But then, one day an injured seal washes ashore and warns of dangerous, cloudy waters that are flowing toward the island--and soon the animals are forced inland to fight over dwindling resources. Roz calms and organizes the animals, but the poison tide takes a terrible toll on the island. And when the robot discovers that her new body is waterproof, she marches into the waves and sets out across the ocean, determined to stop the poison tide. During her undersea journey, Roz encounters amazing geological formations and incredible creatures, and she sees the devastation caused by the toxic waters. Creatures she meets along the way direct her to a mysterious character known as the Ancient Shark, who explains that the poison tide is caused by a huge station that floats on the waves; a station operated by humans and by robots. To stop them, the Ancient Shark is prepared to attack with an army of sea creatures. However, Roz hopes to find a peaceful solution, instead." -- Provided by publisher.