When Akuto, an ordinary high school student with a passion for gaming, and his sister Tsukasa get mysteriously transported to the peculiar realm of Chiyodaku, their lives take an unexpected turn. Tasked by a nonchalant princess to serve as judges in her kingdom, they face a challenging debut—a murder trial involving a hero. As Akuto guides his fantasy-world novice sister through a maze of quirky courtroom personas, the duo embarks on a quest for justice, unearthing the elusive truths that lie ahead.