What is the fetch execute cycle on a computer?

This is quite a long story. The very 1st computer was invented during the reign of Henry the 8th.One of his exectioners was killed when the huge pc ran out of power(in the form of a cow turning a turbine). He vowed to get revenge so he invented in Heaven a complicated system on all modern PC's. When the fetch the execute cycle comes on, you should see a man with an axe cycling with his faithful pet cow called Bob. He will chop youir files into two sections. By the way this complete story is fictionous and i hope i kept you entertained.