Mimu finds herself stranded on a tropical island and must build her way to fame by winning contests and showcasing her singing talents. Much of the game is spent exploring the island's top-down city on foot — visiting locations, tracking down key people, and steadily improving Mimu's stats, which include a detailed breakdown of physical attributes and popularity rankings. Roaming fans and other unpredictable characters sometimes ambush Mimu on the city map, adding a layer of RPG combat to the idol-management gameplay.