繁华时尚的忍者岛,乐高小人们过着快乐无忧的日子,除了……隔三差五会遭到邪恶魔头加满都(贾斯汀·塞洛克斯 Justin Theroux 配音)的入侵骚扰外。当然,幸亏有英勇无畏的幻影忍者,他们一次次挺身而出,与魔王大战,才使得忍者岛免于被邪恶统治的危险。绿色忍者劳埃德(戴夫·弗兰科 Dave Franco 饰)是加满都的亲生儿子,不知道他忍者身份的市民们因此经常嘲笑辱骂劳埃德。郁闷的青年只得将一腔怒火撒在以破坏为乐趣的加满都身上。在又一次遭到挫败后,加满都带着威力更强大的军团卷土重来。关键时刻,劳埃德启动了吴大师(成龙 配音)禁止使用的终极武器,最终给忍者岛带来毁灭性的灾难。 为了拯救忍者岛,幻影忍者们跋山涉水,甚至与加满都展开了合作……Six young ninjas Lloyd, Jay, Kai, Cole, Zane and Nya are tasked with defending their island home, called Ninjago. By night, they're gifted warriors, using their skills and awesome fleet of vehicles to fight villains and monsters. By day, they're ordinary teens struggling against their greatest enemy: high school.