Abby Lee Miller and all of your favourites return to the stage in this second collection of DANCE MOMS Season 4. Abby's new completion team is taking shape and as more auditions occur for Abby Lee Dance Company, the moms will stop at nothing to ensure their girls have a place to shine on stage even if it means going up against Abby. Maddie and Mackenzie go head-to-head for the first time ever and the impending arrival of a brand new dance group looms over Abby's original line-up.