Mnet's 'M! Countdown' is back for its weekly show featuring performances by your favorite artists!

On this week's episode, 82MAJOR debuted with "FIRST CLASS", tripleS EVOLution made their unit debut with "Invincible", Ailee came back with "RA TA TA", NCT 127 made a comeback with "Fact Check", Lim Young Woong returned with "Do or Die", ONF came back with "Love Effect", Rothy returned with "Something Casual", Whee In made a comeback with "In the Mood", ONEUS came back with "Baila Conmigo", EPEX returned with "Full Metal Jacket", LIGHTSUM came back with "Honey or Spice", Xdinary Heroes returned with "Break the Brake", Kep1er returned with "Galileo", and XG made their comeback with "Puppet Show".

As for the winners, BTS' Jungkook and NCT 127 were the nominees, but it was Jungkook who took the win with "3D." Congratulations to Jungkook!

Other performances included 1MILLION, Lim Young Woong, CRAVITY, TEMPEST, and EVNNE. 

Watch the performances below!

WINNER:

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DEBUT: 82MAJOR

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UNIT DEBUT: tripleS EVOLution

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COMEBACK: Ailee

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COMEBACK: NCT 127

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COMEBACK: Lim Young Woong

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COMEBACK: ONF

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COMEBACK: Rothy

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COMEBACK: Whee In

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COMEBACK: ONEUS

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COMEBACK: EPEX

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COMEBACK: LIGHTSUM

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COMEBACK: Xdinary Heroes

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COMEBACK: Kep1er

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COMEBACK: XG

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1MILLION

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Lim Young Woong

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CRAVITY

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TEMPEST

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EVNNE

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