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.

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

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

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.

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. Watch on Prime Video

Sean's team struggles with the death of a teammate, and heightened emotions lead to questionable driving. Reed arms the Dominator with probe cannons, while Tim smokes out a South Dakota monster that just keeps growing.

Storm and chasers collide in Minnesota for a final showdown. As a ferocious EF-4 twister targets the town of Wadena, one team finds themselves in the wrong place at the right time, and Sean's trial by fire becomes a race to save others.

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

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.

Reed's cannons are locked and loaded, but multiple tornados prove a hard target for an itchy trigger finger. Tim's team chases in the tornado twilight zone, while Sean weathers a storm of controversy.

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

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.

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.

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

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.

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.

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

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.

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.

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.

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.

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.

This special features interviews and documentary footage with the show's production crew, explaining how they accompany the storm chasing teams and the difficulties they encounter working under intense conditions. It shows the main camera angles too.

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