In 1900, Naomi Murdoch deserted her small-town family to go on the stage. Some ten years later, daughter Lily invites Naomi back to see her in the Riverdale high school play. Her arrival sets the whole town abuzz, wakes up old conflicts, and sets off new emotional storms.

本片为经典惊悚电影，叙述地质小队来到亚马逊丛林里，科学家发现海洋与陆地交接间有种恐怖生物，长个骷髅手和蛛网指。他们接着又发现半人半鱼的生物，试图要捕捉牠，不久这可怕生物就要反扑。