Rudolf enjoys a life of comfort and care in Gifu, Japan. Yet true to the adage, curiosity gets the best of the kitten, and he decides to explore beyond the four walls of his home. When he's inadvertently whisked into the back of a cargo truck and lands in Tokyo, he befriends Ippaiattena, a seasoned street cat who possesses a crucial and unusual skill that will help him find his way home: the ability to read the human language. Rudolf's journey is rich with Japanese culture, and his story celebrates the wonder of discovery—that magical moment when you realize you have the key to unlock the world.

The stage is Shibuya. When Ryuuhei Oda was in elementary school, he admired his kind older brother. Ryuuhei, who witnessed the mysterious death of his brother, is now a cheerful high schooler who doesn't let the lurking nightmare surrounding faze him. One day, while kickboxing, he's bitten by a mysterious creature named Tris and has an unusual dream. He confronts his twisted desires as rumored "Drops" fly through the streets. What does he see beyond that? (Source: MAL News)

Ifrit, who has been trapped in Rimuru due to the latter's Predator skill, recaps events of the season while in a discussion with Veldora as they play Shogi.

The film's story begins when Arata inadvertently touches "Hermes Apocrypha," Lilith's Grimoire. Suddenly, he is enveloped by a bright white light, and a girl appears before him. She calls herself Lilim, and treats both Arata and Lilith as her parents. At the same time she appears, something changes in the world. The forbidden Eternal Library awakens. In the Library is sealed the ultimate culmination of Alchemy, the White Demon Lord. The White Demon Lord plots to eliminate Arata and the Trinity Seven to usurp the position of Demon Lord. Bristling with untold power, the White Demon Lord attacks Arata, and triggers a desperate crisis where Arata and the Trinity Seven must save the world in this last battle. (Source: ANN)