Overview
A musical battle between 6 trending girl group acts, in order to "determine the real number one" when all 6 release their songs at the same time.
Cast
- Taeyeon as Main Host
- Lee Yong-jin as Self - Queen Manager
- Hyolyn as Self - Contestant
- Kim Min-young as Self - Contestant
- Nam Yu-jeong as Self - Contestant
- Hong Eun-ji as Self - Contestant
- Lee Yu-na as Self - Contestant
- Eunha as Self - Contestant
- SinB as Self - Contestant
- Umji as Self - Contestant