Whispers circulate about a young girl striking a pact with a white fairy to fulfill any heartfelt wish, transforming into a magical girl tasked with battling menacing witches. Iroha Tamaki, a compassionate student from Takarazaki City, embodies this legend. Empowered with a healing gift and a mystical crossbow, Iroha ventures into witch-infested labyrinths to safeguard humanity. Curiously, Iroha cannot recall her initial wish, a perplexing enigma shared by the enigmatic Kyuubey. Prompted by rumors of salvation for magical girls in Kamihama City, Iroha embarks on a fateful journey, only to confront exceptionally powerful witches. Rescued by seasoned magical girl Yachiyo Nanami, Iroha initially shuns Kamihama's perils. Yet, a serendipitous encounter with a miniature Kyuubey triggers suppressed memories, compelling Iroha to delve into the city's mysteries despite the escalating risks.