The male version centers around the Tokyo idol unit Six Gravity (composed of characters representing December to May) and the sibling rival unit Procellarum (composed of idols born in Western Japan and representing June to November).
The six characters (representing December to May) are students at a school that gathers talented individuals striving to become goddesses.
Unlike the male version which is set in modern Japan, the female version is set on another world.
The series stars Six Gravity members Yuuki Kaji, Kousuke Toriumi, Toshiki Masuda, Tomoaki Maeno, Yoshimasa Hosoya, KENN.