In an abandoned Tokyo overrun by bubbles and gravitational abnormalities, one gifted young man has a fateful meeting with a mysterious girl.

High schoolers Momo and Okarun, who debate about ghosts and aliens, investigate paranormal sites, encountering supernatural forces while awaking hidden powers to face the unknown. Theatrical event featuring the first three episodes of DAN DA DAN, and an exclusive interview with Yukinobu Tatsu and Shihei Lin, the author and editor of the original manga, Fuga Yamashiro (Director), and Shion Wakayama (voice of Momo) and Natsuki Hanae (voice of Okarun).

Haunted by past trauma, Hathaway Noa is drawn to a mysterious girl named Gigi Andalucia, whose strange powers stir memories within him. While swayed by her cryptic words, he continues preparing for Mafty's mission -- the attack on the Adelaide Conference. Meanwhile, Kenneth Sleg of the Earth Federation Forces prepares a defense operation for the Adelaide Conference and a plan to eliminate Mafty and is approached by Handley Yoxon of the Criminal Police Organization with a secret proposal. As Hathaway and Kenneth pursue their respective goals, Gigi also sets off for Hong Kong to fulfill her own role.