Since the Heian era relocation, humans, tanuki, and tengu have maintained a delicate balance. But none of that matter as a young tanuki is tasked by an older tengu to deliver a dangerous letter.

Yasaburou visits Yajirou, who lives in the bottom of a well as a frog and forgot how to transform back into himself. When a storm comes, the three non-frog Shimogamo brothers race to help their mother, who is terrified of thunder.

In order to uphold a Shimogamo family tradition, Yasaburou needs to do what Yaichirou could not and come up with a leisure cruiser for them to launch. He asks to borrow Yakushibou's flying inner parlor, but ends up having to make a dangerous deal with Benten.

Yasaburou had been hiding from Benten in Osaka, but thanks to Kinkaku and Ginkaku she catches him during a visit to Kyoto and makes him perform tanuki tricks for the Friday Fellows. It is revealed that Yasaburou's mother was saved by a man who gave her onigiri and also that one of the Friday Fellows, Hotei, has loved tanuki ever since he saved one and fed it onigiri...

Professor Yodogawa chases down Benten and Yasaburou, and they check out some autumn foliage. When she ditches them, Yodogawa has a lot to say about his philosophy of eating and Yasaburou also gets told a story about a conversation between Yodogawa and Benten's first tanuki hot pot victim, which he promptly reports to Yajirou.

Yasaburou gets interrupted while warming his butt and sent to convince Prof. Akadama to attend the council where the new Nise-emon will be decided. He later succeeds in his quest for warmth, but over the wall splitting the men's and women's baths, he receives an ominous apology from Kaisei; her brothers are plotting something.

After Yasaburou gets a hand from Benten to escape Soun and his Elite Guard, the Ebisugawas manage to nab him anyway through a clever Kinkaku-Ginkaku plot. Meanwhile, Kaisei helps Yashirou escape the Electric Brandy factory and Yaichirou is handed over to the Friday Fellows as the primary ingredient for their year-end hot pot.