Akari awakens at the Sefiro Fiore institution, where the headmaster Etia Visconti tells her about the organization's use of the Elemental Tarot in their ongoing battle against the Daemonia, monsters that possess humans overtaken by negative emotions. Akari moves to the school and meets her new teammates: Seira Hoshikawa, who wields the Star card; Luna Tsukuyomi, who wields the Moon card; and Ginka Shirokane, who wields the Temperance card. During a seemingly normal day of lessons, the girls are dispatched to kill a Daemonia...