怪物王子和恐龙公主的故事在继续。 史莱克原以为可以和费奥娜在沼泽地过上自由散漫的生活,谁知道费奥娜的父亲,变成青蛙的“遥远王国”国王病重,史莱克和费奥娜不得不放弃自由,继承王国。 对史莱克而言,“祸不单行”:费奥娜怀孕了,显然他没有做好当爸爸的准备。因为不想继承王国,也因为即将出生的小怪物,史莱克带着话痨驴子和穿靴子的猫,一同去找菲奥娜的远方堂弟亚蒂,在他们的软磨硬泡之下,懒散的亚蒂终于答应接过王位这个烫手山芋,四人开始了热闹非凡的回国之旅。 与此同时,在国内陪伴父母的费奥娜公主也遇上了不小的麻烦,大反派“魅力王子”纠结了一帮海盗卷土重来,阴谋篡位,费奥娜组织了一支妇女自救队,童话中的公主、母后们悉数上场,展开了搞笑连连的正义之战,及时赶王国的史莱克一行四人,也参加到了队伍中,“另类”大决战的序幕也就此拉开。When Fiona's father and King of Far Far Away passes away, the clumsy Shrek becomes the immediate successor of the throne. However, Shrek decides to find the legitimate heir Artie in a distant kingdom with his friends Donkey and Puss in Boots to be able return to his beloved house in the swamp with the pregnant Fiona. Meanwhile, the envious and ambitious Prince Charming joins the villains of the fairytales plotting a coup d'état to become the new king.