6 Kpop Girl Groups (AOA, Mamamoo, Lovelyz, Oh My Girl, (G)I-DLE, plus one secret competitor) compete in a comeback war. In this episode, the groups learn who their competition is for the first time, fight over performance order, and the secret sixth challenger is revealed.

After an inspiring start by Mamamoo and Park Bom last episode, Oh My Girl, (G)I-DLE, Lovelyz and AOA perform their hits. The shocking 66 Drop rule is announced, where a team losing twice in a row is kicked off the show. Oh My Girl gets bad news.

Mamamoo and AOA cover each other. A backup dancer choice raises eyebrows - and rankings, as does a surprise guest.

A Queendom quest affects the cover song competition. Two groups that did poorly last competition make desperate and surprising choices, hoping for a big payoff.

The lead singer and lead dancer from each group collaborate and compete as units. The singers fight over who gets a duet with Hwasa.

The dance unit leader is chosen, and a legendary choreographer joins the unit. The voice units perform a demo. The groups become closer with each other at a retreat.

The vocal and dance units perform.

The "Fandoras Box" challenge, where each group performs a fan-chosen song.

The winners of the combined Vocal Unit, Performance Unit, and Fandora contests are announced.

All the groups perform their comeback hits. A winner is announced.

The new six groups are revealed for the first time.

After the performances of VIVIZ and HYOLYN, the remaining teams’ performances get revealed.

After the end of the grand first match, the groups prepare for the second match, the Cover Song Battle.

After the performances of WJSN, LOONA, and Brave Girls, the remaining teams’ performances are revealed.

The theme for the third match is revealed. There will be two rounds: the Position Unit Battle; and each group will choose representatives for a Vocal Unit or Dance Unit. These representatives will be gathered together for a special Queendom Workshop.

The new teams work hard on their chemistry and come up with ideas for their special collaborative performance in the Queendom Workshop. Later, the audience gathers to watch the Vocal Unit Battles.

The results of the Vocal Units are revealed. The Dance Units prepare for their live performances.

All groups have a special meeting with their fans and discuss the song and theme of the next performance.

The second half of the fan-dedicated performances take place.

In the final round all six teams will compete and fans worldwide will vote to decide the winner.