Two millennia ago, a Lybian king has a basilisk (snake-shaped dragon), which petrifies people, subjected to the same fate with a golden scepter during a solar eclipse. Both these and several victims are dug up by modern archaeologist Harrison 'Harry' McColl's expedition. Despite a cryptic warning from tribal locals, everything goes to his Colorado university's museum. It's all exhibited during another eclipse, which leads to the monster reviving. Harry and some of his friends must try to petrify the monster again.

罗勃幼时目睹父亲惨遭麦康暗杀，为了济弱扶倾，他化名罗宾汉，隐身森林劫持王族财物，分送给需要帮助的人民。某日，他意外劫持约翰亲王的税金与赠送新人的结婚礼品，约翰亲王大为愤怒，决定下令加重人民税金，并重金悬赏逮捕罗宾汉。这时，身为镇长的麦康，也释放囚禁多年的怪兽追杀罗宾汉。为了对付这个来自另一世界的怪兽，罗宾汉带队深入不见天日的黑森林，寻找传说中的迪莎摩果……