Karl takes the Trans-Siberian Express from Moscow to China. On the trip, he experiences a Russian steam room, undergoes Cosmonaut training, meets a magnetic man, gets buried alive, competes in a wrestling match, and visits a dwarf village.
Karl travels to Australia to swim with dolphins, but the trip doesn't turn out as expected. On the way, he stops in Thailand, where he meets some ladyboys and gets attacked by monkeys. In Australia, he swims with sharks instead of dolphins.
Karl sets off to Alaska to go on a whale-watching cruise. Before heading out to sea, he journeys across a frozen landscape on foot, by snowmobile, and by dog sled. The cruise aboard a working deep-sea fishing boat proves difficult for Karl.
Karl travels to Africa to see wild gorillas. Prior to visiting the gorillas, Ricky and Steve send Karl to teach at a school, rebuild a hut, go bungee jumping, visit a domesticated hippo, cook for a king, and go animal tracking.
Karl visits Japan where he trains to be a sumo wrestler, stays in a capsule hotel, decides to invent something, eats fermented Japanese fish, studies with a Zen Buddhist master, participates in a Japanese tea ceremony, and climbs Mt. Fuji.