In episode 9 of "Dance Moms" season 6, the other dance moms will gang up on Abby Lee Miller as the coach power-trips the girls.

The short promotional trailer of "Nia Saves the Day" shows that the feud between Abby and the mothers goes through the ceiling as Ashlee Rumfallo puts her oar in the squabble. As Abby mortifies the girls, Ashlee decides to step in to ease the tension. But it seems that everything just goes from bad to worse from there.

The synopsis of the episode reads: "It's a week of duets for the ALDC junior elite team with Brynn and Maddie going up against Kalani and Kendall. But when Kalani's back injury starts to act up and Kira is not there to help, Melissa and the other moms have to step in and do what's right for her."

With Kira absent and the moms side-tracked, Ashlee temporarily fills in the office manager position that has just been vacated under Abby. In the clip, Abby is shown bullying Ashlee while Ashlee says yes to everything her demanding boss says. This further pumps up the drama as the mothers confront the bossy Abby to defend Ashlee.

The end of the trailer shows one parent telling the coach, "You win, Abby. You win. You wanted to humiliate the girls and you did win."

In other news, it has been confirmed that after season 6, viewers will have to miss Maddie Ziegler in the show. Reports say that Larisa Magda, an up-and-coming professional dancer, may take the place of the "Dance Moms" star.