After discovering Nazaré, Portugal's monstrous swells, pro surfer Garrett McNamara sets out to achieve his dream of riding a 100-foot wave.

Despite setbacks during their second season in Nazaré, Garrett catches a wave that changes everything.

Surfers new to Nazaré fail to heed safety advice; Garrett's appearance at a competition takes a dark turn.

In 2017, Nazaré's largest swell to date paves the way for a broken record and a broken back.

Garrett has concerns about proposed safety measures put in place as the world's top surfers arrive in Nazare for the WSL's Tow Surfing Challenge.

After the competition abruptly ends, the athletes reflect on their beloved sport.