Kai heads to Portugal for a historic Nazaré swell and in the midst of an epic showcase of big wave performances by the world's best, he faces a wipeout that thrusts him into a battle for his life.

With the first winter swell hitting Jaws, Kai looks to redeem himself after a tough loss in the Big Wave event last year. By his side is his brother, Ridge, who aims to be every bit as good as Kai.

Kai, Ridge and Ian Walsh fly to Mavericks in California for what's being hailed as the swell of the decade. The waves are huge and clean as Kai pushes the limits of performance surfing in giant surf.

Kai wants to take his aerial game to the next level, so he hits the snowy ramps of Jackson Hole, the perfect waves of Bali, and a wave pool in Waco, Texas, to hone his skills.

It’s Super Swell Saturday at Jaws and Kai aims to turn in the year’s best performance at his home break. But a series of physical and mental tests takes him to the brink of what he thinks is possible.

Big wave champion, ultimate waterman and now a married father of twin girls – Kai Lenny's balancing act looks different in 2023, where his home life and performance goals are ready to reset.

Kai Lenny assembles a surf super-team with Kelly Slater and Carissa Moore for the Backdoor Shootout at Pipeline, then competes in the first running of The Eddie since 2016 at XXL Waimea Bay.

Kai Lenny chases his big wave dream of a title at The Eddie before switching gears to compete against the World Tour’s finest surfers in a high-performance battle down the beach at the Sunset Pro.

With big wave season ending in Hawaii, Kai Lenny chases a new challenge in Alaska where he meets up with snowboarding icon Travis Rice to learn how to take his surfing to the next level (on snow).

Kai Lenny takes off on a 24-hour strike mission for a tow swell in Tahiti and pushes the limits of what’s possible on a surfboard (and on a hydrofoil) for the world’s most innovative waterman.

Kai Lenny kicks off the big wave season at Jaws, facing the risks that come with his pursuit of progression, then Maui water safety bands together after fires ravage the town of Lahaina.

Kai Lenny surfs the same swell at both Jaws and Mavericks, then confronts the risks vs rewards of big wave surfing after suffering a serious injury at Pipeline, the most dangerous wave in the world.

Surf brothers Kai and Ridge Lenny relive their epic XXL wave ride at Maui's Jaws surf spot, and Kai lets us go BTS to take a look at his state-of-the-art surf equipment testing.