• Derek Hough from ABC's "Dancing With the Stars" jumps backstage with his award for Outstanding Choreography at the 65th Primetime Emmy Awards in Los Angeles September 22, 2013.

Derek Hough from ABC's "Dancing With the Stars" jumps backstage with his award for Outstanding Choreography at the 65th Primetime Emmy Awards in Los Angeles September 22, 2013. (Photo : REUTERS)

"Dancing With the Stars" (DWTS) Season 20 (2015) has reached its endpoint. ABC's reality dance show kicks off its two-part season finale on Monday, May 18, 2015. The final three-Rumer Willis and Val Chemrkovskiy, Noah Galloway and Sharna Burgess, and Riker Lynch and Allison Holker-will perform two routines each for the final bid of scores from the judges. It will be followed by results episode/grand finale on Tuesday, May 19, 2015. Here are few spoilers for final episodes (Week 10) of "Dancing With the Stars" (DWTS) Season 20 (2015). Read on to find out who is performing what.

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[Spoiler alert! This article contains spoilers for "Dancing With the Stars" (DWTS). Please do not read further if you don't want to know more.]

In the semifinals, the remaining five couples delivered performances based on judges' choice. Nastia Liukin and Sasha (replacing Derek Hough) and Riker Lynch and Allison Holker scored perfect highest points and Noah Galloway and Sharna Burgess scored lowest points. However, Nastia and Derek were eliminated.

Moving on to the finals of "Dancing With the Stars" Season 20 (2015), ABC has released a synopsis on its official website. On Monday, the show will feature one-hour performance episode. Willis, Galloway and Lynch along with their respective professional dancer partners will compete against each other for the most coveted Mirror Ball trophy in two rounds.

 In the first, the couple will perform a previously performed routine. According to Buddy TV, Willis and Chmerkovskiy will perform their Foxtrot routine from week 1. Galloway and Burgess will repeat their week 3 performance of Argentine Tango. As for Lynch and Holker, they will perform their "Pirates of the Caribbean" Paso Doble that they performed during Disney week.

In the second round, the final three will perform a Freestyle routine. Willis and Chmerkovskiy will amalgamate Contemporary with Argentine Tango. Galloway and Burgess will perform Contemporary dance with four other dance pros. Details about Lynch and Holker's Freestyle remain unknown.

The one-hour final segment will be followed by two-hour grand finale and results show on Tuesday. The show will reveal the winner of the Mirror Ball trophy. But before that happens, there will be 24-hour fusion challenge and some special guest performances. According to the report, the show will see return of all the "Dancing With the Stars" (DWTS) Season 20 (2015) contestants. Together they will deliver a dance routine.

It will be followed by an encore performance of one of the final three's Freestyle as decided by the judges. Redfoo will perform his latest single "Juicy Wiggle." Charlotte Mckinney and Keo Motsepe will come together to Cha-Cha-Cha to "California Gurls." Suzanne Somers and Tony Dovolani will return to the "Dancing With the Stars" (DWTS) stage to repeat their Salsa performance to the tune of "Copacabana."

Robert Herjavec and Kym Johnson will dance to the tune of Bills. Chris Soules and Witney Carson will perform on the music of "Footloose." Willow Shields and Mark Ballas will do their "Alice's theme" dance. As for Nastia Liukin and Derek Hough, they will perform Charleston to the tune of "Honey, I'm Good." Parti LaBelle and Artem Chigvintsev will perform to the tune of "In Da Club."

More "Dancing With the Stars" (DWTS) alums will make an appearance on Season 20 (2015) finale, including Alfonso Ribeiro, Amy Purdy and Sadie Robertson. Fans must also brace themselves for a performance by music sensation Sia. She will sing her single "Elastic Heart." She will be joined by Derek and Julianne Hough for a dance performance.

Jason Derulo will take the stage to perform his number "Want to Want Me." Towards the end, before the declaration of results, the final three will perform their "24-Hour Fusion Challenge" routine.

"Dancing With the Stars" (DWTS) Season 20 (2015) finale airs at 8:00 pm on ABC. Come back for more spoilers, recap and update.