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

On this week's episode, Espero debuted with "Endless", MONSTA X returned with "Beautiful Liar", SF9 came back with "Puzzle", Forestella made a comeback with "UTOPIA", ATEEZ came back with "HALAZIA", Park Hyeon Seo returned with "It'll Be Okay", H1-KEY returned with "Rose Blossom", ILY:1 made a comeback with "Twinkle, Twinkle", Double Decker came back with "I Wish This Was Love", Bumjin returned with "We'll Remain a Novel", Jeong Dong Won came back with "Baennori", Lee A Young came back with "Our Love Was a Folly", and Woo!ah! returned with "Rollercoaster". 

As for the winners, NewJeans and NCT Dream were the nominees, but it was NewJeans who took the win with "OMG". Congratulations to NewJeans!

Performers included TO1 and DKZ.

Watch the performances below!

WINNER:

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DEBUT: Espero

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COMEBACK: MONSTA X

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COMEBACK: SF9

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COMEBACK: Forestella

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COMEBACK: ATEEZ

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COMEBACK: Park Hyeon Seo

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COMEBACK: H1-KEY

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COMEBACK: ILY:1

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COMEBACK: Double Decker

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COMEBACK: Bumjin

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COMEBACK: Jeong Dong Won

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COMEBACK: Lee A Young

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COMEBACK: Woo!ah!

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TO1

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DKZ

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