Three weeks into the season, a winter storm tears through the Dungeness Crab grounds. A capsized boat echoes its mayday across the fleet. Four lives hang in the balance.

One week after losing a boat and three men to the Pacific Ocean, Oregon’s crab fleet suffers another devastating shipwreck, and more lives hang in the balance.

As a massive storm assaults Oregon’s crab grounds, the fleet gets devastating news about one of their own. Every captain on the water must consider whether the risk of fishing through deadly seas is worth the reward.

After weeks battling the Pacific Ocean, Oregon’s crab fleet nears the finish line, but crossing won’t be easy. With lethal waves blocking his path, Captain Mikey Retherford Jr faces a deadly bar crossing into port, with his son on board.

While remembering the deadliest crab season in years, the fleet moves to the next fisheries. Captain Kenny Ripka must survive working his Dad’s deck for trawl season. Jonny Law seeks a record-setting shrimp haul & the Retherfords revive their boats.

For pilot Jason, rescuing stranded climbers with no coordinates, dense clouds, and limited fuel, is a daunting task. An equipment delivery becomes an emergency, when Siddartha and Andy discover a young mother has just given birth & is bleeding out.

With an injured climber stuck in the death zone, veteran pilot Jason preps his heli for the world’s highest landing spot. Rookie Pilot Ryan searches for 9 climbers, stranded in a remote corner of the Himalayas.

Monsoon season brings new dangers. Ryan battles the elements while racing back to Lukla with sick climbers. Andy is plunged into a deadly blackout while flying to rescue a climber with a life threatening head-injury.

Across the Himalayas, pilots are stretched to breaking. Ryan confronts an uninvited climber trying to hitch a ride at 17,500 feet. Jason attempts his highest ever rescue. Lorenz learns some grim realities of flying in the Himalayas.

Jason and Siddartha attempt a mission to prevent deaths along the treacherous Ice Fall, the most danger mile on Earth. Ryan battles violent wind to rescue a climber from base camp. Lorenz has just minutes to save a local man with a head injury.

Final days of the season. With a doctor onboard, Ryan struggles to locate a woman suffering severe abdominal pains. Pushing the helicopter to its maximum, Jason struggles to reach a collapsed climber in the Death Zone.

IMAX filmmaker Sean Casey and research meteorologist Josh Wurman head out to intercept one of nature's most deadly creations, tornadoes. Their team follows the first tornado of the season as it hits Tulia, Texas, and ultimately destroys the town.

After a week spent drifting around Kansas waiting for a calm spell to end, the crew is on the hunt. They chase a huge mesocyclone across a wilderness area completely devoid of paved roads, making the storm virtually impossible to intercept.

Five weeks into their storm chasing season, IMAX filmmaker Sean Casey & meteorologist Josh Wurman are under the gun to intercept a tornado. Conflict between Josh and Sean reach new heights, and Sean begins to trust his instincts over Josh's science.

It's nearing the end of the tornado season, and although the team has collected record-breaking data, Sean has yet to get his one shot. While on their way to Woodward, Oklahoma, a tornado forms earlier than expected.

Storm season starts out deadly, and Josh and Sean race to get a bigger, badder Tornado Intercept Vehicle, TIV-2, on the road. Meanwhile, a new force of nature emerges in Tornado Alley as Reed Timmer beats the pros to get tornado intercepts.