Filmmaker Nicolas Rossier travels to the Bahamas to meet William Trubridge, a world champion free driver. Freediving is a form of deep water diving done without the aid of external breathing devices. Trubridge has set 15 freediving world records and currently holds the world record in the Free Immersion and the Constant Weight Without Fins disciplines. On January 18th 2011, Trubridge won the World’s Absolute Freediver Award (WAFA) naming him ‘best all around freediver’. Rossier documents Trubridge's life and training, resulting in a unique portrait that offers a privileged glimpse into an unusual and magical world.