Lisa convinces the locals to clean up the polluted Lake Springfield after a crowd of fans sink the Green Day concert stage. Meanwhile, Homer saves a pig from being killed in Krusty Burger and adopts it, calling the animal Spider Pig. After two days, Spider Pig fills up a silo with its excrement and not knowing what else to do, Homer dumps the silo in the lake, polluting it. The angry population forces the Simpsons to move to Alaska. Meanwhile, the...

The sleepy desert town of Prosperity, Arizona, is being menaced by giant arachnids that have mutated through exposure to toxic waste. The local sheriff and her teenage daughter work to prevent a complete takeover by the bloodthirsty spiders, getting valuable help from Prosperity's prodigal son, who's just returned to his embattled hometown.

A savage beast, grown to monstrous size and driven mad by toxic wastes that are poisoning the waters, spreads terror and death on a Maine countryside.

It all began in a sleepy Midwestern community, a place that had never known evil--until now. But years ago, in a stillness beneath the waters, something sinister happened, and now its deadly spawn are emerging from the depths into the light. What are these hungry, mutated creatures after? Any piece of flesh they can get, including human beings!