McHumans

After Cthulhu awakens and destroys civilization as we know it, humans are used as slaves and food by their new slimy, submerged masters. One such young man, Ricky, works at an undersea fast food joint where he's forced to kill and cook other humans for the Deep Ones to eat. But he has a plan. His restaurant caters to the Big Man himself, and if Ricky's plan works, he could pull off the unthinkable:

He could actually Kill Cthulhu.