The waves are monsters. The dangers are epic. The competitors are insanely gutsy. Or maybe just insane.

But every winter, when breakers the size of office buildings topple onto the North Shore of Oahu, the world's top-ranked extreme surfers risk injury and worse to win surfing’s fabled Triple Crown.

With jaw-dropping rides from big-wave warriors like seven-time world champion Kelly Slater, 2003 Surfer of the Year, Andy Irons, the fearless Malik Joyeux, and 13-year-old phenom John John Florence, it's the ultimate, adrenaline-fueled battle of surfing's mega-stars.

And it's a battle not all will survive.

Captured by acclaimed director Dana Brown.