Oshiri Tantei Movie 6: Star and Moon

When a koala approaches Butt Detective about a missing relative from an idol contest, a new case unfolds that leads him to Stardust Island. This vibrant locale is not only the venue for the competition but also the lair of the notorious Phantom Thief Academy, led by the enigmatic Phantom Thief G. As Butt Detective delves deeper, he uncovers a sinister plot known as the Dark Age Plan, orchestrated by the criminal organization.

To infiltrate the island and gather clues, Butt Detective adopts the persona of an idol, blending into the dazzling world of fame. Along the way, he allies with Phantom Thief U, who is determined to reclaim the precious Moonlight Stone from the clutches of Phantom Thief G. Together, they navigate a thrilling web of deception and intrigue, where every performance could be their last.