The galactic super idols are detectives! The singing, dancing, just a bit sexy, action mystery battle!! The last remaining AKB0048 kenkyuusei, Shinonome Kanata, along with Maeda Atsuko the 13th, Oshima Yuko the 9th, and Kojima Haruna the 8th, have been selected for a mission to protect the costumes of the legendary costumes of the original AKB from the galactic phantom thief, Elixir! The four enroll as students in the academy where the costumes sleep. Up against the greatest thief in the galaxy, will they complete their mission?