Grasslands look open and simple from a distance, but this episode of the Hostile Planet series treats them as one of the harshest habitats on Earth. Bear Grylls narrates as the camera follows predators and prey through a landscape defined by extremes: drought that dries up water holes for months, wildfires that sweep across dry grass in minutes, sudden floods, and killing freezes that arrive without warning. Being a top predator offers no guarantee here, animals still have to outlast the weather itself, and the film tracks fierce mating contests and territorial fights alongside the daily hunt for food and water. Close-up footage captures chases, standoffs, and the physical toll extreme conditions take on animals built for a more forgiving climate. Rather than a single storyline, the episode moves between species and seasons to build a picture of grassland life as a constant negotiation with instability, where survival depends as much on reading the sky as on outrunning a rival.