Each season focuses on elementary school and middle school girls who are given magical items to fight against evil beings. They are assisted by fairy mascots and together must battle ordinary people who have been turned evil by the enemy. Their job is to purify these beings and to collect various things which helps them in the battle ahead. As the seasons go on, their magical powers get upgraded, enemies become stronger and along the way, they may gain more members who will assist them in their battles.
Main series
4 seasons have currently been announced, and the 3rd, Phantomirage, is currently still airing. Miracle Tunes currently has been dubbed in 2 languages and has a European remake. Each of the series has a manga adaptation by Asaka Ogura published in Ciao and Yuuki Harami published in Pucchigumi.
To promote the seasons, a temporary idol group is created with the main cast of the shows. Each group provides the opening and ending theme songs while also holding live performances around the country. When each season is completed, the girls cease activities in the idol groups. In 2019, a new idol group 'Girls²' was announced. This was a combination group which included members of all three groups. Yuzuha from miracle2, Momoka, Misaki, Youka and Kurea from magical2 and finally the newest, Minami, Kira and Toa from mirage2. Later, Ran Ishii from mirage2 also joined Girls2. They provided the opening themes for Secret × Heroine Phantomirage! and Police × Heroine Lovepatrina!.
When Idol × Warrior Miracle Tunes! first aired, Confidence and Oricon determined it started a "new genre" for shows aimed at the female toddler to primary school age demographic. The series was viewed as a new female counterpart to the Super Sentai series due to including female-oriented interests, which were often seen in media targeted to young girls. Sumiko Kodama from Confidence also noted that the show's integration of J-pop elements in collaboration with LDH also made the presentation easy for audiences of all ages to enjoy, as Miracle²'s real-life debut would remind older audiences of Speed. Editors at Real Sound believe the popularity came from the revived interest in live-action tokusatsu shows aimed at a female audience, which had declined in the early 1990s due to competing toy sales with Sailor Moon and growing interest in magical girlanime series. The success of the show led to it being a direct competitor to other magical girl series for children, particularly the Pretty Cure series.