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.
| Title | Air Date | Duration | ||
|---|---|---|---|---|
| Season 1 | Episode 1 | Who's Going First? | 2019-08-29 | 83 min |
| Season 1 | Episode 2 | The Result of the Preliminary Contest | 2019-09-05 | 83 min |
| Season 1 | Episode 3 | Doing Covers of One Another's Songs | 2019-09-12 | 84 min |
| Season 1 | Episode 4 | Doing Covers of One Another's Songs Part 2 | 2019-09-19 | 84 min |
| Season 1 | Episode 5 | The Result of the Second Preliminary Contest | 2019-09-26 | 85 min |
| Season 1 | Episode 6 | Queendom Retreat | 2019-10-03 | 83 min |
| Season 1 | Episode 7 | The Third Preliminary Round | 2019-10-10 | 86 min |
| Season 1 | Episode 8 | Fandora's Box | 2019-10-17 | 83 min |
| Season 1 | Episode 9 | Fandora's Box Part 2 | 2019-10-24 | 82 min |
| Season 1 | Episode 10 | The Final Competition | 2019-10-31 | 146 min |
| Season 2 | Episode 1 | The Grand Introduction | 2022-03-31 | 120 min |
| Season 2 | Episode 2 | 1st Round: Signature Song - Part 2 | 2022-04-07 | 116 min |
| Season 2 | Episode 3 | 2 Round: Cover Song | 2022-04-14 | 109 min |
| Season 2 | Episode 4 | 2 Round: Cover Song - Part 2 | 2022-04-21 | 102 min |
| Season 2 | Episode 5 | 3 Round: Position Unit Battle | 2022-04-28 | 108 min |
| Season 2 | Episode 6 | 3 Round: Position Unit Battle - Vocal Units | 2022-05-05 | 130 min |
| Season 2 | Episode 7 | 3 Round: Position Unit Battle - Dance Units | 2022-05-12 | 94 min |
| Season 2 | Episode 8 | 3 Round: FANtastic Queendom | 2022-05-19 | 107 min |
| Season 2 | Episode 9 | 3 Round: FANtastic Queendom - Part 2 | 2022-05-26 | 116 min |
| Season 2 | Episode 10 | The Final Competition | 2022-06-02 | 184 min |
| Directing | Lee Yun Kyu | Director |
