Another wholesome installment of the Wild Robot series. Roz is back home on her island with her family and friends, and all seems right in the world. Until they start hearing about a mysterious new threat known only as ‘the poison tide’. Creatures of the sea and sky are seen evacuating their homes because of this strange substance that is poisoning the oceans. When hope grows dim and resources grow scarce, Roz takes it on herself to travel the ocean floor in search of the ancient shark who can supposedly help rid the ocean of this poison tide. Roz risks her life and wellbeing, yet again, to help those she loves and learns a lot about the state of the world along the way.