Watch FMovies. For millions of years, the annual migration in the Masai Mara has survived everything that the natural world has thrown at it. Wildebeest, Zebra and countless other species set off on this journey of enormous proportions to reach the greener grasses thousands of miles away. But the treacherous journey is filled with hardship and the ever-present threat of being ambushed by hungry predators. Crossing the Mara River will be one of the mega herds biggest challenges with crocodiles and lions alike eagerly awaiting at the infamous paradise crossing. It's a bloodbath like no other and only the lucky will make it to the greener pastures on the other side.