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

On this week's episode, GHOST9 debuted with "Think of Dawn", XUM made their debut with "Ddalala", EVERGLOW came back with "La Di Da", The Boyz returned with "The Stealer", UP10TION made a comeback with "Light", H&D came back with "Umbrella", BDC made a comeback with "Shoot the Moon", and Cignature returned with "Arisong".

As for the winners, Stray Kids and YooA were the nominees, but it was Stray Kids who took the win with "Back Door". Congratulations to Stray Kids!

Performances also included Stray Kids, fromis_9, Moonbin & Sanha, KNK, VAV, B.O.Y, A.C.E, CRAVITY, Crying Nut, and George & Kim Yo Han.

Watch the performances below!

WINNER:

===

DEBUT: GHOST9

==

DEBUT: XUM

==

COMEBACK: EVERGLOW

==

COMEBACK: The Boyz

==

COMEBACK: UP10TION

==

COMEBACK: H&D

==

COMEBACK: BDC

==

COMEBACK: Cignature

===

Stray Kids

==

fromis_9

==

Moonbin & Sanha

==

KNK

==

VAV

==

B.O.Y

==

A.C.E

==

CRAVITY

==

Crying Nut

==

George & Kim Yo Han

===