Maina is the untouchable half-blonde bombshell student council president. Every student and teacher bows to her, except for one plain, unremarkable boy — Sota Mori — who shamelessly stares at her explosive body with raw lust. Her sadistic nature ignites as she tries to put him in his place, but nothing works.

One day Sota obtains a magical “M Note” that turns his darkest, most perverted fantasies into reality. With a few strokes of the pen, the once-mighty Do-S queen is transformed into a devoted, masochistic slave who begs for degradation and pleasure. Her cool and collected vice-president, Shino, was already secretly turned into an M-girl earlier and now competes fiercely with Maina to become Sota’s number one servant.

What follows is an intense, lewd service battle between the former proud queen and her loyal subordinate — paizuri, cowgirl, deep-throating, ass worship, and every possible way to milk their master dry. The ultimate power reversal hentai where the haughty Do-S beauty and her rival fight to out-serve each other in the most humiliating and pleasurable ways possible.