一个神秘的船只对地球发动了战争,而只有在爱荷华州最新建造的美国战舰和船员们可以防止地球大战……。A noise is coming from the floor upstairs. Eunsu, hears this for over a month which causes uncontrollable anger to rise up. She gets eliminated again from a competition she had prepared for a long time. Eunsu decides to write her last piece with the theme of the noise between the floors and persuades her friend to help her follow and track the secret.。剧情叙述公元994年的苏格兰城堡,有一群帮助人类捍卫城堡的夜行神龙,他们日间为石像、夜间为神龙,由Goliath所领导。但是却因为人类的阴谋,神龙们几乎被摧毁殆尽。仅存的神龙虽然躲过一劫,但却沉睡了千年之久。当他们醒来时发现世界已经变了,他们如今身处在纽约曼哈顿的现代都会,是由百万富翁 Xanatos将整个城堡移建过来,他希望这群神龙能为他所用。但是历经人类背叛险遭灭族的夜行神龙,如今还会再度相信人类吗?。