Construction worker Douglas Quaid discovers a memory chip in his brain during a virtual-reality trip. He also finds that his past has been invented to conceal a plot of planetary domination. Soon, he’s off to Mars to find out who he is and who planted the chip.

A large spider from the jungles of South America is accidentally transported in a crate with a dead body to America where it mates with a local spider. Soon after, the residents of a small California town disappear as the result of spider bites from the deadly spider offspring. It’s up to a couple of doctors with the help of an insect exterminator to annihilate these eight legged freaks.

A barbarian named Kull becomes ruler after defeating the old king in battle, thus receiving his crown. But direct heirs of the king, trying to topple Kull and regain the throne, bring an old witch queen Akivasha back to life. Their plan backfires, however, as Akivasha plans to have her demon lords rule the kingdom alone. The only thing that can stop her is the breath of the god Volka, and Kull.