[ WP ] Write a story that starts like a Christmas tale but slowly becomes a Cosmic Horror story .

They all loved Christmas, the people of Groot, 
 The tinsel and presents, twas such a hoot! 
 They put up the trees and they put up the lights. 
 Christmas was coming, in just seven nights! 
 
 The shops were busy, they were all buying gifts. 
 Some lazy parents left their kids by the lifts. 
 People sung songs, and others were kissing. 
 No one had noticed the children go missing. 
 
 Three nights before Christmas the children returned, 
 They sung new songs from someone they'd learned. 
 These songs were not happy, not merry, or cheerful 
 They were dark, long and solemn, and quite the earful. 
 
 On the night before Christmas, all through Groot came a song 
 It seemed quite alarming, like something was wrong. 
 The sky cracked open, as did the ground. 
 There was no more Christmas with Cthulhu around.
