Scooby-Doo and Shaggy must go into the underworld ruled by the Goblin King in order to stop a mortal named The Amazing Krudsky who wants power and is a threat to their pals, Fred, Velma and Daphne.

在这个全新的原创经典影片里，汤姆和杰瑞都生活在童话镇里，一个拥有童话灵感“只要你相信，梦想便会成真”的主题公园。年轻的杰克想不顾一切地从一个贪婪的亿万富翁手中拯救这个主题公园，于是便与他忠实的朋友-猫和老鼠，把奶牛卖了来…