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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.

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.

Five weeks into their storm chasing season, IMAX filmmaker Sean Casey and 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.

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 incredible tornado intercepts.

TIV-1 makes a heroic return, but the tables turn as a monster EF-4 tornado chases the storm chasers through eastern Arkansas.

Tensions mount between Sean and Josh, as Reed offers to chase with the TIV. Reed chases a risky nighttime tornado into the hills of Arkansas, while Sean and Josh return to Greensburg, Kansas one year after a twister nearly wiped the town off the map.

Sean's new TIV-2 chases a promising storm, but vehicle parts fly for all the wrong reasons. Reed's team pursues a monster storm as it bears down on the town of Lamesa Texas.

Reed and Josh's teams struggle to find the perfect storm in Nebraska. Reed's girlfriend Jene gets lost in a deadly hailstorm while the DOW team mistakenly drives into an on-coming tornado.

With the DOW truck and all the research vehicles functioning once again, the team finds themselves hunting in the same territory as their rival Reed Timmer. Tornadoes are forming all over western Kansas on what looks like the biggest day of the season.

The DOW Team's in chaos as a broken radar sends Josh scrambling to fix it. Reed jumps on the opportunity to scoop the science team once again, while Danny and Aaron struggle to escape a ditch before a tornado gets too close.

As tornado season comes to a close, Sean has one last chance to get the shot of all shots from inside a tornado, while Reed pushes his team to the edge, getting closer to a twister than ever before.

Sean and Reed face off at the New Mexico border. Monster tornados break up everything in their paths, except the tension.

Tornado season erupts early in Oklahoma. Reed gets his new Dominator too close. Tim chases multiples, and Sean battles a rain-wrapped monster.

Reed steps up his science to take on Dr. Josh Wurman's massive research project. Joel has second thoughts. The fallout reaches Sean, who makes a drastic decision.

On the last chase of the season in Nebraska, Reed and Tim chase multiple vortices. But when an EF-3 monster touches down right on top of Reed's armored research vehicle, Mother Nature shows who really dominates in Tornado Alley.

Both Tim Samaras and the TIV team face off with a dangerous tornado. Reed pushes too close, and finds no place to hide.

Reed's new radar propels him from aggressive chaser to extreme scientist, inside an EF3.

Reed, Sean and Tim take on the strongest tornado conditions of the season, and nature responds with twisters too close to home.

Sean Casey's meteorologists finally put him in position for the shot of a lifetime, and this time it's a home run. Reed, Tim, and Josh all score big.

The deadliest tornado of the season tears a hundred mile path across Mississippi, destroying 600 homes and the town of Yazoo City. For Reed, Joel and Chris, an epic chase turns into a race to save lives, and changes their own lives forever.

Reed and Joel bury the hatchet to face a new tornado season, but armor offers little protection when the roof blows off the new Dominator. Sean mixes up his crew and unleashes tension in the path of a west Texas twister.

Sean finally gives the reigns to his meteorologist-navigator Matt Hughes, who leads the team to their best tornado intercept ever. Then triumph turns to tragedy as Storm Chasers loses one of its own.

After the worst tornado in his life, Reed pursues a new force of nature in TV weather woman Ginger Zee. But chasing more than weather leaves teammates out in the cold. As twisters rip through the Ozarks, one long-time chaser calls it quits.

South Dakota spins up the twister of the season, and the non-stop tornado action leaves no room for drama.