Korean-produced, anime-style web series on YouTube set in a dystopian future where aliens have conquered Earth, treating humans as pets and forcing them into a brutal singing competition for entertainment. The main characters are a group of young humans who sing to survive, with losing contestants being executed on stage. The series explores themes of survival, dehumanization, idol culture, and the relationship between humans and animals through its narrative and music, with characters forming bonds and developing complex relationships in their struggle for freedom.