Living with her aunt, uncle, and cousin Fuyuna, Akari Taiyou aspires to become a fortune teller like her late mother, armed only with a deck of tarot cards. A haunting dream of battling a monstrous Fuyuna shocks Akari awake, yet the family inexplicably forgets Fuyuna's existence. Saved by magical girls Ginka, Seira, and Luna, Akari learns of her magical lineage and the duty to combat Daemonia using the power of The Sun card. Wrestling with the humanity of those possessed by Daemonia, Akari faces the moral dilemma of redemption or eradication. As threats escalate, the unity of Sefiro Fiore organization and its team undergoes severe trials, testing their resolve from both external and internal forces.