It's the end of a season, but "Dancing with the Stars" Season 21 is going out with a bang. The two-part season finale will be a dance-filled extravaganza like no other with the remaining contestants, guests and returning cast joining forces for a memorable close to one of the show's most exciting seasons.

According to a report from Buddy TV, the finale will feature three entire rounds of dancing over two nights to push Nick Carter, Bindi Irwin, Carlos PenaVega and Alek Skarlatos to their limits and their best performances.

The couples will hit the floor twice during the first night with a judges' choice routine and a freestyle number. For the collaboration with judges, Carrie Ann Inaba will mentor Skarlatos and Irwin, Julianne Hough will be with Carter, and Bruno Tonioli will be helping out PenaVega. At the end of Monday's episode, one couple will be out of the running.

The second night will be the final episode of the season and the most difficult with the 24-Hour Fusion Challenge, where the couples will have to combine two different dance styles in one jaw-dropping routine. This is the contestants' last chance to make their case for the coveted Mirror Ball trophy.

Guest stars are set to appear during the finale episodes to help the show say goodbye to the memorable season. On Monday, fans can expect performances from Meghan Trainor, Who Is Fancy and Ariana Grande. Meanwhile, the Tuesday episode will close with musical performances by Alexander Jean, Chaka Khan, Nick Carter and Andy Grammer. An outdoor dance routine will also be staged at the Grove as well as Kim Zolciak's routine that she was unable to perform earlier in the season.

All the wonderful performances will make the show an enjoyable one to watch, but the fans are eager to see who will be crowned champion. Irwin and partner Derek Hough have made a strong case for themselves throughout the season, but Carter and pro Sharna Burgess have been hot on their heels practically the entire time. PenaVega's talent and chemistry with partner Witney Carson will be a force to reckon with, though, while Skarlatos and partner Lindsay Arnold can still surprise everyone with a season-winning performance.

In a report from USA Today, Carrie Ann Inaba revealed that regardless of what happens, she enjoyed how the contestants "really opened their hearts to let us into their journeys."

Inaba added that anyone can win and Monday's performances are important.

"That sort of makes or breaks anybody in this competition," she said, referring to the freestyle round.

"Dancing with the Stars" Season 21 finale will be televised live on Monday, Nov. 23 at 8 p.m., and Tuesday, Nov. 24 at 9 p.m. on ABC.