Fifteen years ago, Edwin went to clown camp to fulfill his lifelong dream of bringing laughter to the world... but nobody laughed. Humiliated on graduation night, Edwin viciously murdered the entire camp before vanishing into legend. Now, despite the warnings of the town drunk, old man Bonzo has reopened the ranch and a new class of clowns have unwittingly signed up. When their die-hard instructor Sgt. Funnybone (Miguel Martinez, The Donor Conspiracy) is found dead in a puddle of cream pie and blood, the curriculum changes from comedy to survival! Edwin slashes, stabs, strangles, and disembowels the clowns while laughing insanely at his own bad jokes.

1590年，科罗拉多派遣由弗纳多•德加玛将军（Miguel Martinez 饰）率领的一千人部队，进入传奇的黄金城市埃尔多拉多寻找黄金，但他们遭遇了骷髅军团的袭击，一千人无一生还。 时间推至现代，戈登教授（Miguel Martinez 饰）率领一群年轻人组织的考古队前来寻找黄金城旧址，受到三个开着越野吉普的年轻人的胁迫，考古队被迫与他们同行。几经周折，他们终于找到埋藏着皑皑白骨和黄金的山洞，这群不速之客吵醒了守卫黄金的骷髅军团，一场古代对现代、骷髅对人类的战争旋即展开。