The Gem Defenders are a team of superheroines who protect the city from evil.

Four ordinary young women were granted amazing powers by a dying alien, each receiving a gemstone power ring that grants them superhuman strength, speed and endurance, and the ability to fly.

You are a mind-controlling supervillain who's come to the Gem Tower HQ to try and take them down. Will you convert the superheroines into eager thralls, or end up in a jail cell?