Tokio, a junior high student of the present era, is enlisted to join the 24th‑century Space‑Time Administration Bureau. Alongside partner Calen, they strive to uncover the 'True History', the hidden portion of events omitted from textbooks. Yet their path is blocked by the Akudama Trio, who aim to keep this truth concealed in the shadowy corridors of time, ensuring no one uncovers their secret agenda for gain.
