76 years after the end of World War II, work to dispose of unexploded munitions is still an everyday sight in Okinawa Prefecture, southwestern Japan. It will probably take 70 years to remove all of them. Renowned expert Sunagawa Masahiro has dedicated more than 40 years to finding dud explosives that still lie buried and has so far located thousands of them. He has now taken up a new challenge: developing an AI probe to discover buried explosives. He is also dedicated to training his successors, aiming to pass on not just his skills but also the spirit of Okinawa to the next generation. The program follows his challenge.

Mori Tetsuya, a third-generation fisher in Akkeshi town, northern Japan, supports his family with income from catching sea urchin and other marine products. In 2021, a red tide hit the town for the first time, killing 80% of the sea urchins in the area. Over 60 years, local fishers have established a unique farming method for these creatures. To protect them from the fast current and cold seawater, young urchins are released on the seabed by a specially trained diver in a suit weighing 60kg. Tetsuya is responsible for this dangerous mission. The program follows him for 2 months as he struggles in the face of the unprecedented damage.