Earth is about to be destroyed by a meteor! The beautiful Sayo is told by the upper management at her mysterious organization that the only ones who can save the planet are three girls named Kyouko, Asuka, and Mirai. Although skeptical, Sayo brings them together by telling them they're going to train to be idols. They're raring to go, but for some reason, she leads them to an arcade... Source: crunchyroll