The time has come for Tanabata but the event brings bad memories to Bundorio. Meanwhile, the Hashiriyans send a new monster that brings Taiya into a pinch.

A series of unexplained fires have been burning down the town, and the people seem to be in trouble. Genba, who has become a "detective", deduces the cause...!? Eventually, the culprit of the fires is discovered, and Taiya changes into his new form, "Bun Red 119", and takes a stand against him.