Within the Chinese imperial court, stern-faced Emperor Xiao Jinyun and spirited Empress Xu Yu are at constant odds with one another. But the universe has an interesting way to solve their issues: an accident causes the two to switch bodies, forcing them to put themselves in the other's shoes—literally. Now responsible for unfamiliar duties and court dynamics, the emperor and empress must navigate the maintenance of their identities, unruly concubines, and the nation itself. In doing so, Xiao Jinyun and Xu Yu's personal qualities and unconventional skills find new purpose, and a sense of understanding and compassion grows between the two. However, great threats loom within and outside the court. If the imperial astrologer cannot discover the key to switching them back in time, then internal strife and suspicion may lead to the duo's untimely demise.

Akihito Kanbara finds himself in a courtroom and faces an unexpected jury for a peculiar lawsuit. Having turned into chibi idol versions of themselves, Mirai Kuriyama, Mitsuki Nase, and Sakura Inami are led by Ai Shindou to present incriminating evidence and deliver their dazzling verdicts. However, Akihito is not the only one who is assigned a case. Pressed with varying charges, other characters of Kyoukai no Kanata stand trial and endure the comedic truth of their quirky habits.

All hope seems lost when the world is suddenly invaded by aliens. Earth's only defense is a small three-person team known as the Special Counter-Aliens Task Force, consisting of an anonymous director, the tyrannical Shiro, and the easygoing Arikawa. The luck of the Task Force improves when Arikawa finds a teenage boy lying alone on a hill. The boy, Kakashi, is humanity's only hope—he has power previously unbeknownst capable of defeating the aliens! However, without any memories and with no knowledge on how to use his power, Kakashi is left clinging to Arikawa and Shiro as well as the only remnant of his previous life: his broken cellphone. Kakashi is conflicted by the fears and emotions clouding his mind and he calls his own motivations into question. Can he overcome his doubts and internal struggles and save the world?

Third season of Shuumatsu no Walküre.