In a world of adventurers and magic lies Naral Island. Every generation, a Demon Lord rises to plague the land, and every generation, a Hero is born to subdue him. For countless centuries, the cycle has repeated with no end in sight. The latest Hero, Juulia "Yusha" Charldetto, has almost completed her valiant campaign alongside her party members: responsible priest Seiran "Seira" Élénoir, enigmatic mage Meiza "Mei" Endust, and hyper-energetic warrior Fai Fai. In the final battle against the Demon Lord, Yusha's party attempt a risky spell to cast their enemy into the drifts of time. But the incantation goes awry, sending Yusha and her friends back to a time before the Demon Lord, before Yusha becomes the Hero, and before the party had even graduated as adventurers. With their memories of the future erased, the four girls restart their ambitions to become the Hero's Party, aspiring to defeat the Demon Lord. However, in a sudden twist of fate, the Demon Lord was also sent back in time with her memories intact. Reduced to the form of a little girl, the Demon Lord takes the name Mao and infiltrates the adventurers' school as a teacher, planning to stop Yusha before she becomes a hero. Thus begins the story of Yusha and her friends, in their quest to defeat the Demon Lord, not knowing that the one they seek is right by their side. [Written by MAL Rewrite]

Following Studio Petit's popularity for Time Journey's, the crew is now faced with 3 anime at the same time. Rushing to fill the quotas, the owner of Studio Petit hires Takashimadaira, a veteran producer to help Kuromi. However, all Takashimadaira cares about is making deadlines, severely hurting the quality of the images. Shihonmatsu, who has been helping Kuromi, gets angry at the new producer and leaves, leaving Kuromi with a difficult choice: to choose between the quality or the deadline. Studio Petit managed to survive the production of "Time Journeys," but now that show's finished, and in its place they've got no less than three series to animate, with just four artists, one manager and one director - not to mention one very bedraggled animation runner. And it doesn't help that Shihonmatsu picked this week to quit smoking. As the staff starts to fall behind their crushing deadlines, the owner calls in an old "pro," Takashimadaira, to get production back on track. But once he starts putting speed above quality, the Petit team has to choose between following orders and doing their jobs right.

Uchikomatic Days is a 5 minute short telling the story of the birth of the Uchikomas, the 'ugly duckling' second generation think-tanks that made substandard replacement models for the Tachikomas. The short features a music performance by the A.I. Tough Guy Uchikomas, a group of rising stars that will provide entertainment at the Harima City for Academic Research New Year's Eve Party. This special feature is available on the Ghost in the Shell: S.A.C. Solid State Society DVD.

Mantaro has made it to the semifinal match of the Chojin Cup. He must now fight Ricardo in a soccer field to advance to the last match. Kevin Mask is also in the semifinals, and must defeat Ilioukhine in an aerial field to advance. These three matches will determine who wins the Chojin Cup.