Abby endures physical and emotional struggles while undergoing chemotherapy and learning to regain the use of her legs, all the while pushing forward to keep her dream of a new competitive dance team for the Abby Lee Dance Company alive.
Abby finally returns to the competition dance scene in Pittsburgh where her legacy first began; emotions run high and tension builds as Abby hopes her new team of seven strangers can dance together as one.
Abby challenges the team with her most serious group dance yet, and casts Lilliana as the lead for the first time in her ALDC career; when GiaNina complains about her choreography, Abby unleashes her wrath on the Broadway veteran.
Abby announces that she's sending someone home; Stacey and Tricia go to war over Brady; when tasked with picking their own duet partners, the young dancers fear that the wrong decision could send them home.
With Brady gone, Abby challenges the girls to prove that they can win on their own; GiaNina is assigned an over-the-top character solo to go head-to-head with Sarah, who hopes her first solo can be a personal win for her family.
Abby assigns the girls a group dance about sorority hazing; one mother shockingly quits the team when Abby brings back former teammates Yolanda and Elliana as part of a plan to help motivate the girls.
A loosing streak and fighting between the girls puts the group dance in jeopardy; Abby gives a mini her big shot at joining the team; a duet with GiaNina and Elliana leads to all-out war between two moms.
Abby challenges the ALDC team with their most daring routine yet in their first competition in Pittsburgh; longtime rivals Lilliana and Elliana go head-to-head in famous solos inspired by former ALDC member JoJo Siwa.
Hannah faces her biggest challenge yet when Abby assigns her the lead in the group dance; Elliana and Sarah have a solo showdown; Abby's treatment of Michelle threatens to tear Sarah and Michelle apart; Yolanda threatens to quit the team.
With Elliana's shocking departure, Abby challenges the team with an Angry Birds inspired ballet group dance. Rivalries brew as two duets compete against for ALDC jackets, and Michelle is berated after the ongoing Studio 19 drama.
The moms lash out when Abby decides to hold an open call audition for a new team member; Pressley and Hannah compete for their shot to perform at nationals; Abby receives devastating news from Los Angeles.
With only one week until nationals, the pressure is on for the ALDC; Abby choreographs her most personal group dance yet; Brady and Pressley go head-to-head for the chance of dancing solos at nationals; one team member quits unexpectedly.
The ALDC team heads to nationals in New York City, with three solos going head-to-head for the national title; tensions reach a boiling point when Abby is confronted with the ALDC's big rival Studio 19.
After a season jam-packed with mama drama, Jai Rodriguez sits down with the entire cast of "Dance Moms" to right the wrongs and finally set the record straight; the new elite team performs some of its award-winning dances from the season.