Mimu Emilton is an adorable fourteen-year-old who has arrived at the annual Starland Festival to become an idol, following in the footsteps of her role model, Yuri. This event is the most celebrated on a united Earth, and Yuri, now serving as Earth's President, has encouraged citizens to join the ranks of Excellent Idols. Unfortunately for Mimu, she consistently fails to reach her audition on time, as one misadventure after another lands her in compromising situations (often involving undergarment exposure, I might add). She escapes these predicaments with the help of the current Excellent Idols, whom she befriends along the way. Just as she secures her place on stage and begins her audition, however, an unknown group of aliens kidnaps both her and the Excellent Idols. This marks only the beginning of a wild interdimensional chase that places Mimu in a position to save the world, provided she can learn to believe in herself.