After eighteen years trapped as a test experiment, the protagonist of this story learns the scientists working on said experiment planned to wipe his memory away so they could move onto the next phase of the project.
However, wanting to avoid this, the protagonist uses his mind altering powers to escape and now he plans to abandon his life of being obedient and start doing thing's his way from then on.
As to how he'll go about doing that, you'll just need to dive into the game to find out!