Amidst the sudden appearance of monsters, the magical girl Astra Nova appeared to save the people from danger. However, while the magical girl Erina was engaged in a fierce battle against the monsters, she let her guard down for just a moment and ends up being captured by the villain Nox. Erina begins to experience strange sensations little by little in response to Nox's secretive and suggestive demands...

(Source: TOPTOON, translated)