Polar wildlife carries this episode from the top and bottom of the planet, following Arctic and Antarctic species through a landscape reshaped by climate change. Gentoo penguins scramble over rocky outcrops to reach nesting grounds, while underwater cameras follow trillions of Antarctic krill grazing on algae beneath the sea ice, the base of a food web that supports seals, whales, and seabirds. Polar bears and walruses appear as the ice they depend on for hunting and resting shrinks year by year, and the film uses their struggles to show what a warming climate does to animals with nowhere else to go. Footage moves between breeding colonies, ice floes, and open ocean, pairing close observation of individual animals with wider shots of the terrain changing around them. Narration keeps the science plain: less ice means less hunting ground, fewer seals, and harder winters. The film treats the Arctic and Antarctic as linked systems, both feeling the same pressure from a warming world.