Goma-chan is fascinated by footage of the Snow Festival on TV. He must really want to see snow! But there's no snow in Tokyo right now... So Sugao-kun brings up the idea of making it snow for Goma-chan! Yuma-kun, Mao-chan, Yumiko-chan, and the Sakata brothers all join in to set up a Snow Festival just for Goma-chan!
It's to recreate the 
Snow Festival atmosphere!
!هذا لتهيئةِ أجواء مهرجان الثّلج
Um eine Atmosphäre
des Schneefests zu erschaffen!
Por el festival de nieve.
Por el festival de nieve.
C’est important,
pour l’ambiance du festival.
È per ricreare l'atmosfera del festival della neve!
É para criar o clima do festival da neve.
Потому что у нас снежный фестиваль!