"So basically the song is about how cold and lonely they feel and they wish to melt away the icy coldness and they want to find warmth. In Korean, the word ‘Ice’ and ‘Adult (or grown-up)’ have a similar sound, like homophones. So the ‘Ice’ in this song has been used as a symbol of ‘grown-ups’. So the coldness comes from the adults and they repeat, "why are they so cold" and they refers to the adults. Thats why in the video the kid faces many obstacles with adults and they were all really cold to him but in the end he found someone that accepted him and it melted the 'ice' and he finally felt the warmth."