Meet the elite team that will brave harsh elements, deadly predators and each other as they attempt to endure Africa's grueling wildebeest migration. ...

The herd continues its trek and enters dangerous new terrain. Unarmed and far from a hospital, two tap-outs rock their safety in numbers strategy. ...

The Serengeti takes a toll on the herd. They battle hunger and must rappel a cliff face. The next day brings another obstacle: a croc-infested river. ...

The herd snaps under pressure as poachers, grueling terrain and hunger increase tension. Later, a warthog injures two and a river presents the threat of hippos. ...

The herd increases pace to make up for lost time and low food. A doctor is called when a member falls ill, and rising tensions cause the herd to split. ...

Only 32 miles and a waterfall stand between the herd and the finish line. Overcome by hunger, exhaustion and injuries, it's a struggle to the end. ...