In the anime, the Quartet's history of being Sailor Guardians is never shown to viewer and the story is followed after they are captured by Queen Nehelenia and is already a part of her Dead Moon Circus. They begin working for Queen Nehelenia after she appears inside a magical mirror after hearing the Amazoness Quartet playing in a forest, and then offered to keep the Amazoness Quartet from ever growing old in return. Nehelenia changed their dreams into the physical form of Amazon Stones, instructing them to use these to remove the "dream mirrors" of humans. The Quartet also use the Amazon Stones for other attacks. They are dedicated to this task, but still generally spend more time playing than working.