巴斯春与父亲巴尼共同生活，父亲因工作繁忙答应过的事往往无法覆行，而游泳课中，又因畏惧高空跳水遭到同学耻笑，某日前往旧书店借书时，发现一本「回到大魔城」书中女主角，女童太后向巴斯春求救，巴斯春勇敢走入大魔域，才知道大魔域正遭受莎拉达女王和她的巨人队威胁，万一大魔域失落，地球上的小朋友将永远没有故事可听了，巴斯春召集了爱弟、法哥，并凭藉爱轮的法力，救出太后，而大魔域的安危……

From IMDB, "A young orphan who lives with her grandmother in a large Virginian home infatuates herself with the voices of Joan d'Arc. Her nanny seeks out the help of a rich suitor (David Lynch's first real acting role) to take her and the orphan away when she realizes that the often cruel grandmother cannot offer the orphan the love that she needs. Ends with an unpredictable plot twist."