Hangyodon no Parallel Daisakusen: Hana no Oedo wa Oosawagi

A wealthy otter’s mansion is being visited by the ghost of an ancestor, who entrusts Hangyodon with protecting the family’s treasured golden otter statue. Taking the request very seriously, Hangyodon and his friends use a time closet to travel back to Edo.

They arrive just as a phantom thief announces plans to steal the treasure. What should have been a historical visit turns into a chase through old Edo, with Hangyodon trying to outwit a criminal from the past before the golden statue disappears for good.