The first film in a series for Relentless examining the character of artists from very different worlds, discovering the deep similarities despite the surface differences. Featuring the legendary and uncompromising Gallows as they cross America, polarising opinion wherever they go, big wave surfers Tom Lowe and Fergal Smith with waterman Mickey Smith as they make a pilgrimage to the most dangerous wave in the world, Teahupoo in Tahiti and freeride snowboarding legend Xavier De Le Rue exploring the untouched and epic ranges of Greenland.