Two world class athletes switch roles, exchanging a plane for a car. Later, a BMX rider adds a little color to an abandoned warehouse, and in Romania, the show begins in the Swiss Alps for the planet's most demanding rowing contest.

Two world class athletes switch roles, exchanging a plane for a car. Later, a BMX rider adds a little color to an abandoned warehouse, and in Romania, the show begins in the Swiss Alps for the planet's most demanding rowing contest.