Part 1 of 2. Abby hits a creative roadblock with the group routine for Nationals. Later, four girls are assigned solos, but two moms aren't happy that none of them are original members; Kendall premieres her music video; and a former ALDC dancer considers visiting her old teammates.

Abby takes the girls to a cemetery to get them in the spirit for a graveyard-inspired group routine.

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With Nationals only six weeks away, the mothers begin to worry about the ever-changing team, Nia gets her first solo, Abby gives two new dancers a chance to shine and the veteran mothers go on the attack when a new mother insults their children.

The moms dispute with Abby over a vegan-inspired routine, while Kendall, Brynn and Kalani compete with head-to-head solos. Also: the team says goodbye to Abby for possibly the last time when she decides to head to Europe one week before her sentencing, making the moms question the future of the ALDC.

The ALDC's revolving door continues as Abby auditions a new dancer to be a part of the "Great 8" team heading to Nationals. Brynn, Lilly, and Maesi all go head-to-head with solos. And, the moms are hopeful the new dancer will complete the team, but Ashlee thinks otherwise when her mom insults Brynn

Conclusion. In the Season 7 finale, the ALDC compete against the Candy Apples for the title of National Champions. Later, Abby has a breakdown; and an unexpected guest surprises the team.

With Abby away and her sentencing looming over everyone's head, the moms bring in world-renowned choreographer, Laurieann Gibson. Laurieann's intensity and passion shakes things up at the ALDC, but will her unique methods and choreography be enough to win? Meanwhile, ex-ALDC member Chloe returns to the competition world for the first time in two years to dance against her former teammates.

Emotions run high as the team prepares for their final Nationals competition as the Irreplaceables. With four solos, the girls go head-to-head to see who can come out on top as the National title winner. As this chapter comes to an end, the moms and girls all contemplate what their future holds.

Dance Moms favorites Christi and Chloe set the record straight on some of the show’s most memorable moments and reveal their side of the story of why they quit, why they returned and what it was like being away for over two years.

Abby and the ALDC bring an edgy group routine, inspired by Kalani’s 16th birthday, to this week’s competition hoping to overtake Cathy and her Candy Apples for the second week in a row. Kendall dances a Maddie-esque solo determined to beat Nicaya.

Abby brings in a new dancer with an eccentric mother; Abby encourages Brynn to lead Kalani and Kendall in their trio; the mothers are nervous when Abby assigns the first hip-hop routine since the elites walked out.

The Irreplaceables and the ALDC go head to head at a competition for the first time; Abby's team competes with a fan-favorite group number; the older girls shock the audience with a mature routine.

Abby and the ALDC bring an edgy group routine, inspired by Kalani’s 16th birthday, to this week’s competition hoping to overtake Cathy and her Candy Apples for the second week in a row. Kendall dances a Maddie-esque solo determined to beat Nicaya.

Abby makes an unexpected return to her studio; Chloe performs for the first time in front of Abby in two years, but struggles with missing her old teammates; Ashlee makes a decision that shocks the group.

Cheryl adds an old rival to the team, but the mothers are not happy with sharing the spotlight; Kalani suffers a catastrophic injury, putting her solo and the group routine in jeopardy; the pressure of winning brings Camryn to her breaking point.

Laurieann Gibson returns and is more determined than ever to win. With two duets and a group, the girls struggle with stamina as well as their new leader’s cutthroat attitude. Laurieann loses her patience with the moms.

Abby and the ALDC try to break the long standing losing streak in Fresno, CA. Holly's nerves are frayed when Abby announces the theme for a controversial and racially-charged group dance. Meanwhile, Elliana and Maesi's duet brings out the worst in Yolanda and Jamie's already toxic relationship.

The team returns to Pittsburgh, but the stress of proving themselves on the East Coast leads to some of the most explosive battles between the moms all season.

With Abby gone, Laurieann pushes the girls to do professional-level choreography. Kalani and Brynn compete in head-to-head solos. The group routine focuses on an issue that results in a fight between two jealous moms.

In part 2, Abby makes an unexpected return to her studio, but not everyone on the team is happy about it. Chloe performs for the first time in front of Abby in two years, but struggles with missing her old teammates. Ashlee makes a decision that sends shockwaves through the group, and after an unexpected series of events, the team will never be the same.

The ALDC travels to Denver where both the stakes and the altitude are high! For the first time this season Kalani, Kendall and Nia all dance competing solos. Much to the elite's dismay, the minis are in a technically complicated group dance, and the moms once again wonder if this addition will ruin their winning streak heading into Nationals.

Part 2. With Abby away and her sentencing looming over everyone's head, the moms bring in world-renowned choreographer, Laurieann Gibson. Laurieann's intensity and passion shakes things up at the ALDC, but will her unique methods and choreography be enough to win? Meanwhile, ex-ALDC member Chloe returns to the competition world for the first time in two years to dance against her former teammates.

Abby and the ALDC bring an edgy group routine, inspired by Kalani’s 16th birthday, to this week’s competition hoping to overtake Cathy and her Candy Apples for the second week in a row. Kendall dances a Maddie-esque solo determined to beat Nicaya.

The ALDC spend their last week in Los Angeles before traveling to Pittsburgh for Nationals; and the elite team struggle with a difficult routine and a negligent coach. Later, Kendall shoots a new music video.