Num passado alternativo, uma dupla improvável junta-se para procurar um catálogo desaparecido que pode levar a eletricidade para as ruas embrenhadas em fumo de Quioto.
Quioto, início do século XX. Kihachi testemunha as maravilhas da eletricidade com Seiroku. Quatro anos depois, sozinho e cínico, encontra uma rapariga a rezar, absorta.
Envolto em fumo de incenso, Yosuke invade a oficina de Kihachi a exigir o Catálogo e a sua noiva. Mas, porque o tem, desde logo, Inako?
Em plena negação, Yosuke entra em conflito com Kihachi. Mais tarde, os sentidos apurados de Inako revelam um segredo, e a sua crença inspira Kihachi a recriar um invento.
Inako meets a grieving shop owner whose loss echoes her own. Fully believing in Kihachi's skills, she asks him to build an electric machine to help.
Kihachi's latest experiment catches the eye of a strange university graduate, who's convinced that it can help him prove his passion to his crush.
Yosuke challenges Kihachi and the gang to a music battle. With only Inako having musical experience, can they master electric instruments in a week?
On the day of Inako's engagement ceremony, Kihachi urges her to chase her dreams and helps her escape. Guided by Stuart's letter, they head for Shiga.
Before Kihachi can figure out how to fix the electric key, Kengo breaks down and confesses the secret he's been carrying for the past three years.
Kihachi makes a shocking decision to protect Inako, but she takes matters into her own hands. Yosuke reminisces about his first meeting with Seiroku.
Yosuke makes a critical discovery. After Inako and Kihachi clear up their misunderstanding, they help Kengo reconcile with Noriko using a shocking plan.
After Inako and Saki sneak into Yosuke's office to find clues about the Electric Brocade, Kihachi vanishes. Inako realizes that her father holds the key.
Inako and Kihachi throw themselves into pursuing their dreams. Determined to fulfill Seiroku's vision, Yosuke ropes Kihachi into a colossal project.
As the Electric Brain goes berserk, Kihachi, Inako and Yosuke confront their destinies. Who will stay stuck in the past or look towards the future?