Maddie Ziegler
Maddie and Mackenzie Ziegler's mother Melissa Gisoni said she never allowed her kids to watch "Dance Moms." In this picture, Maddie Ziegler and her mother Melissa Gisoni are seen at the People's Choice Awards 2016 in Los Angeles, California January 6, 2016.Reuters

In the latest instalment of "Dance Moms," Maddie and her younger sister Mackenzie will journey through time, figuratively of course, and talk about the past six seasons on the Lifetime reality TV series. In Season 6 episode 21, titled "Maddie and Mackenzie say Goodbye," the Ziegler sisters will speak about special moments, friendships and heart-warming situations that they will never forget.

Ever since Maddie, Mackenzie and their mom, Melissa Gisoni, announced their departure from the show, fans have been put through an emotional ride. Their favourite cast members' exit from "Dance Moms" has no doubt dented their experience of watching the reality TV show, but they will get a last chance to watch the sisters as part of ALDC.

In episode 21, Maddie will answer fans' questions, highlighting her six-year stint on "Dance Moms." She will be joined by her sister, and dance coach Abby Lee Miller.

The promo (via Dance Tards) for the upcoming episode captures a few scenes which depict the closeness between Abby and Mackenzie. The 11-year-old dancer is seen sitting on the coach's lap while sharing her experience.

The upcoming episode will also reveal answers about the dance coach. Although it's not yet clear what questions will be asked, suffice it to say that fans will want to know about Abby' knowledge of dance or lack thereof.

In the promo, the dance coach says, "If those dumb moms want to give me credit for the whole thing, I'm taking it."

"Dance Moms" Season 6 episode 21 will be aired at 9 p.m. EST on Tuesday, May 24, on Lifetime. You can live-stream the episode via My Lifetime.