In the year 2038, Earth is invaded by aliens, and humans become their pets. As time passes and human autonomy begins to fade, a reality audition program called 'Alien Stage' becomes a hit among the aliens. Another season of Alien Stage begins. Humans with various stories gather to sing on stage of their own volition.

We first met at Anakt Garden. Seeing you alone, I was the first to approach and talk to you. At first, I thought you were really strange. But as we spent time together, we grew accustomed to each other and began to harbor feelings we shouldn't have. And so, forced by our Guardians, we stand upon the Alien Stage.