In Mongolia, Ed must wrestle the giant heirs of Genghis Khan to become a man. He takes part in the annual rite of passage festival, Naadam.

Ed meets the Hadzabe of Tanzania, who live in balance with their environment, including collecting honey from the world's most aggressive bees.

In Brazil, Ed endures the painful bullet-ant ceremony. Also facing 24 hours of agony are the Brazilian boys who do this 20 times to become men.

Ed Stafford meets the Hamer, cattle herders from Ethiopia, who must jump a line of bulls to be considered a man.