Jack isn't the sanest of individuals, being grown in a test tube, raised in a lab, and spending the first twenty or so years of his life being systematically tortured, brainwashed, and pumped full of chemicals probably had something to do with that.

He would love nothing more than to exact revenge on those who created him, but as fate would have it, no such luck.

Thanks to the meddling of a higher power, he's stuck in a world full of peace loving, grass eating, multicolored horse people, and has to help them fight off an army of darkness or he doesn't get to go home, and if there's one thing Jack the Ripper can't stand, it's people trying to make a puppet of him…