Weather controls the distribution of freshwater on Earth. David Attenborough narrates how this uneven distribution has given rise to an incredible diversity of species and habits, from the driest desert to the lushest tropical rainforest. Featuring a colony of ants banding together into a raft every time its home in the Amazon floods, a rain frog that manages to eke out an existence in one of the world's driest habitats on Earth, and the last wild camels that survive the Gobi Desert's bitter winters by eating snow that blows in from Siberia.

Female Isisaurus traverse the Deccan Traps to reach their nesting site. A mixed herd of sauropods and Prenocephale navigate a maze of canyons, but are ambushed by a pack of Velociraptor and a trio of Tarbosaurus. A colony of male Corythoraptor protect their eggs from the scorching sun by day, and a female Kuru kulla at night, who has offpsring of her own.
Trudging through a scorching desert, two young Tarchia find relief at an oasis and encounter an adult twice their size, ready to lay claim. Several Isisaurus hatchlings fall prey to Rajasaurus in an attempt to reach their ancestral home.

We're transported to Atka Bay on the frigid coast of Antarctica, where a magnificent colony of emperor penguins embarks on a jaw-dropping journey. These remarkable birds, after three months of oceanic feasting, return to the frozen continent as the waters freeze over. What makes their story even more gripping is that they are the last inhabitants of Antarctica, as other wildlife has wisely retreated to the safer sea.
Narrated by David Attenborough, this extraordinary documentary immerses you in an epic saga of survival, fierce parenting, and unwavering tenacity. Join these resilient penguins as they confront the harshest conditions on Earth, embarking on an unforgettable adventure deep within the icy heart of the wilderness.