Comedy based on the hugely popular animated television series. Stewie (voice of Seth McFarlane), the maniacal baby genius, is distracted from his plans for world domination when he sees a man on television who looks just like him. Convinced that this man must be his real father, he sets off on a cross-country road trip to find him. But his incredible journey leads him to discoveries far more vile and shocking than anything found in his diaper.