You are an ordinary poor young man named Jack Willford, one day you get an old magic book that you find in your house warehouse and manage to summon the primordial demon, the satan where you managed to trick him and get his tongue that makes you able to incite & make anyone do whatever you say willingly and even consider whatever you command or say to be normal, commonplace and your words are Truth to the mind of any individual you want and manipulate them by making it seem as if they were doing things of their own free will, the victim being entirely unaware that they are being manipulated, just like he (satan) used to incite Adam and Eve.