Mike Rowe trains as a trauma surgeon using hyper-realistic scenarios and specialized equipment to learn under simulated battlefield conditions. He then controls an invasive mess of iguanas which are posing health risks to humans on the Florida coast.

Mike Rowe crams into a hockey arena's escalator where he scrapes and cleans a special kind of shmutz from the bottom. Then, he and a zoo keeper venture into the hot, treacherous Arizona desert at night to round up neurotoxic stinging scorpions.

Mike sucks rocks off an industrial roof with a massive vacuum. He then travels to the Black Hills to carve the largest monument in the world: Crazy Horse. Both stories involve several generations working together to pass on their life's ambitions.

Mike visits a ship-building community in Coden, Alabama, to learn the ins-and-outs of building a tugboat, from tight spaces to complex algebra. Then he makes a long climb to the top of a dirty water tower in Magee, Mississippi, to clean inside the tank.

Mike Rowe joins a fourth-generation fisherman's crew in Georgia as they harvest cannonball Jellyfish for food, a trade known as "Jellyballing." Then Mike helps a father-son team install epoxy flooring at a restaurant in time for the dinner rush.

Mike works his hardest construction job yet. He helps a team of rodbusters, who carry 2 tons of reinforced steel each for overpass construction. Next, Mike combats the ruination of rust by galvanizing infrastructural steel in an 850-degree zinc bath.