Recruiting Donkey and Puss in Boots for a new quest, Shrek sets out to bring back the rightful heir to the throne, Fiona's cousin Artie.

史莱克向驴和长靴猫寻求帮助，开始了新的寻觅之旅，他们出发去带回合法的王位继承人——菲奥娜公主叛逆的表哥阿蒂。