Covering one tenth of all species on the planet, Freshwater is a rich, diverse habitat filled with never-ending surprises. The fourth episode is set beneath the Yucatan Peninsula and spanning diverse locations like the rainforests of Costa Rica and the Kalahari Desert and presents a vivid exploration of how freshwater shapes life on Earth. The narrative journeys through the unique breeding rituals of gliding tree frogs in Costa Rica, the strategic hunting methods of mugger crocodiles in Sri Lanka, and the astonishing adaptations of wildlife in the Okavango Delta. It highlights the critical role of freshwater in supporting diverse ecosystems, from the teeming fish species in Lake Malawi to the perilous journey of gobies in Bioko.
The episode also addresses human impact, showcasing the extensive irrigation system in Pakistan and its unintended consequences on local wildlife, like the endangered Indus river dolphin. This captivating chapter not only showcases nature's marvels but also underscores the delicate balance between human needs and wildlife conservation.

The third episode takes viewers on a riveting journey to some of the world's most extreme and breathtaking deserts and grasslands, where nature puts on its most dramatic show. It begins in the arid landscapes of Central Africa's Guelta d'Archei and the Namib Desert in Southwest Africa, places where water is scarce, and survival is a daily battle. The focus then shifts to the remarkable adaptability of creatures like ostriches, who brave the scorching heat and predators to raise their young and a handful of leopards who learned to hunt from trees on the African plains.
In Australia, viewers witness the intricate courtship rituals of the spotted bowerbird, a species facing challenges due to climate change. The narrative then takes us to the vast Eurasian Steppe, home to the unique Saiga antelope, and to Brazil's Cerrado, a biodiverse grassland where the elusive maned wolf plays a crucial role in maintaining the ecosystem.
The episode highlights not only the resilience and beauty of these creatures but also the fragility of their habitats, emphasizing the urgent need for conservation efforts.

The fourth part of the series focuses on the exciting and dramatic Formula 1 race in which Rubens Barrichello and Jenson Button, drivers of the Brawn GP team, fought for the championship. Rubens Barrichello leads the race. However, tension rises when Jenson Button, his teammate and main rival for the title, begins to gain ground. The narration intensifies with the description of technical problems and crucial strategic decisions. As the race unfolds, the internal dynamics of the Brawn GP team are explored, as well as the rivalry between the drivers and the pressure to win the championship. The narrative reaches its climax in the thrilling final laps, where victory and defeat are decided by small margins.
The episode concludes with the celebration of victory and reflection on the significance of this race for the drivers, the team, and their place in the history of Formula 1. The documentary is a mix of on-track action, human and technical drama, and a deep exploration of what it takes to win at the highest level of motorsport.

The third part of the series begins with the excitement of Button's initial victories, highlighting his talent and skill on the tracks. However, as the season progresses, the focus shifts to the growing tension between Button and Barrichello. This tension is fueled by the internal struggle for leadership in the team and the drivers' championship. These rivalries affect performance on the track. Another key point is the management of the Brawn GP team, facing financial and technical challenges while seeking to maintain its competitive edge against rivals like Red Bull and McLaren. We discover the psychological aspect of racing, showing how the pressure of the championship affects Button, leading him to make mistakes and question his abilities. At the same time, Barrichello's resurgence is observed, showing determination and experience to take advantage of his opportunities.
Finally, the evolution of the Brawn GP team is addressed, from its triumphs to moments of uncertainty, culminating in a season that is both a success story and a testimony to the unpredictable nature of Formula 1.

What connects amateur sleuths turning up at crime scenes, anti-social behaviour in schools and riots? Marianna Spring has spent one year investigating harmful behaviour on TikTok spilling out into the real-world. As well as crunching the numbers, Marianna tracks down TikTok users, victims and former employees to interrogate and expose how extremely high engagement on TikTok around particular topics appears to be creating these 'frenzies'.
The documentary explores how users go to extreme lengths in order to get more engagement in a battle for followers and likes. Marianna investigates the role TikTok's algorithm and format plays in what’s happening and reveals insiders’ concerns about the app. The film seeks to find out if this is the real danger and what impact it is having on society.

The final episode begins with a description of the extreme cold conditions that characterized the beginning of the Holocene period, and how species like the bison and the wolf adapted to survive in these hostile environments. We will witness the majesty of the woolly mammoth and the fierce cave lion, with a vivid reconstruction of their struggles for survival. We'll see the impact of climate change during this period, from the expansion of the deserts to the transformation of the tropical rainforests of Africa into grasslands, deeply affecting primates and other animals. It highlights how these changes forced primates to adapt to life on the ground, facing new challenges and predators.
A crucial turn occurred with the emergence of humans as dominant predators and their influence on the extinction of large mammals. The documentary describes humanity's transition from hunter-gatherers to farmers, a change that radically altered the landscape and biodiversity of the planet. Finally, it poses a reflection on the current challenges of climate change and the sixth mass extinction, inviting viewers to consider humanity's crucial role in shaping the future of the Earth.