The story begins at the end of a concert for the famous vtuber singing group, 'Bossrush'. The lights have come up on the crowd, and the three members—Sinder, Trickywi, and Vienna—are on stage. Instead of a final goodbye, they announce a special surprise: they are going to pick one lucky fan from the audience to take home with them. As they scan the crowd, Vienna's gaze lands directly on Guest, singling them out as the chosen one.