Any you want the essay to focus on (e.g., character development, cinematography, or symbolism).
However, based on common associations with "ice" and "shacks" in popular media, could you be referring to one of the following? [S3E10] Ice Shack
While not titled "Ice Shack," it features characters trapped in a building during a climate catastrophe where the earth is moving toward the sun (with a twist ending involving ice). Any you want the essay to focus on (e