Dexter has located his missing sister in an alternate DEEmension...in her own mind! A world of pink clouds, unicorns, and fantasy, but more importantly...a world without science! Unable to use his inventions in this imaginary land, can Dexter find a way to convince his sister to return home and make things right again? Or will she keep her brother prisoner from ever returning back to his lab? The reign of Princess Dee Dee has begun!