One of Japan's most prized textiles comes from a subtropical island where the makers still hew to the methods of 1,300 years ago. Using indigenous plants and ponds of iron-rich mud, the artisans of Amami-Oshima create luxurious silk pongee, threading the island's long history of poverty and oppression into their craft.

While the ninja moved unseen throughout Japan, Iga, in present-day Mie Prefecture, has been called the birthplace of the ninja arts. Join Chris Glenn and Professor Yuji Yamada as they explore Iga and trace the Iga people's journey from armed farmers who absorbed Shugendo teachings to their emergence as ninja. In the latter half, they visit sites related to the Tensho Iga War -- an event that won the Iga ninja nationwide acclaim -- and explore the shadow tactics used by the ninja to strike terror into the numerically superior Oda army.