A new crop of incredible dancers compete to avoid elimination and qualify to move on to the next round.

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The qualifiers continue with the competition turned on its head as Jennifer Lopez, Derek Hough and Ne-Yo surprise contestants who must first perform in a stripped-down warehouse to prove they have what it takes to move forward in the competition.

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The qualifiers continue with the competition turned on its head as Jennifer Lopez, Derek Hough and Ne-Yo surprise contestants, who must first perform in a stripped-down warehouse to prove they have what it takes to move forward in the competition.

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The qualifiers continue with the competition turned on its head as Jennifer Lopez, Derek Hough and Ne-Yo surprise contestants, who must first perform in a stripped-down warehouse to prove they have what it takes to move forward in the competition.

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Select acts have one last chance to showcase their artistry and athleticism to earn a spot in the duels, where they'll battle for their right to perform on the "World of Dance" stage for the $1 million grand prize.

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The duels begin, and the judges have picked which acts go head-to-head in epic dance battles for a spot in the semifinals; guest judge tWitch decides which acts battle in Redemption to earn a spot in the semifinals on the "World of Dance" stage.

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The Duels" round continues with judges Jennifer Lopez, Derek Hough, NE-YO and special guest judge dancer and choreographer tWitch. This season, the judges have chosen which acts go head-to-head and acts won't know their opponent until they hit the dance floor, leading to some of the most epic dance battles the series has ever seen.

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The Duels continue, and the judges have chosen which acts go head-to-head in epic dance battles for a spot in the semifinals. Guest judge tWitch decides which acts battle in Redemption.

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The duels conclude with the judges having picked which acts go head-to-head in epic dance battles for a spot in the semi-finals; guest judge tWitch decides which acts will battle in redemption and earn a spot in the semi-finals on the stage.

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The final six of the top 12 acts take to the World of Dance stage for the first time; the judges score each performance based on artistry, technique, choreography, creativity and presentation; the top two scoring acts move on to the world final.

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In the season four finale of "World of Dance," the top four acts take the stage for the last time in the "World Final" with judges Jennifer Lopez, Derek Hough, NE-YO and host Scott Evans. Competing for the title of Best in the World, the judges will score their performances based on their artistry, technique, choreography, creativity and presentation.

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