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

On this week, HOT ISSUE debuted with "GRATATA", Mckdaddy & YELO debuted with "Bad Thing", NU'EST came back with "Inside Out", ENHYPEN returned with "Drunk-Dazed", P1Harmony made a comeback with "Scared", ONF made their comeback with "Ugly Dance", BIBI returned with "Bad Sad and Mad", AB6IX came back with "Close", Norazo made a comeback with "Vegetable", Aivan came back with "AI", Dongkiz returned with "Universe", Soran came back with "Be With Me", and Ahn Ye Eun returned with "Sailing".

As for the winners, Kang Daniel and NU'EST were the nominees, but it was NU'EST who took the win with "Inside Out". Congratulations to NU'EST!

Other performers included Lee Jin Hyuk, Yoon Ji Sung, OnlyOneOf, and Checkmate.

Watch the performances below!

WINNER:

===

DEBUT: HOT ISSUE

==

DEBUT: Mckdaddy & YELO

==

COMEBACK: NU'EST

==

COMEBACK: ENHYPEN

==

COMEBACK: P1Harmony

==

COMEBACK: ONF

==

COMEBACK: BIBI

==

COMEBACK: AB6IX

==

COMEBACK: Norazo

==

COMEBACK: Aivan

==

COMEBACK: Dongkiz

==

COMEBACK: Soran

==

COMEBACK: Ahn Ye Eun

===

Lee Jin Hyuk

==

Yoon Ji Sung

==

OnlyOneOf

==

Checkmate

===