When the nefarious Dark Helmet hatches a plan to snatch Princess Vespa and steal her planet's air, space-bum-for-hire Lone Starr and his clueless sidekick fly to the rescue. Along the way, they meet Yogurt, who puts Lone Starr wise to the power of "The Schwartz." Can he master it in time to save the day?

Four teenage girls go on a diving adventure to explore a submerged Mayan city. Once inside, their rush of excitement turns into a jolt of terror as they discover the sunken ruins are a hunting ground for deadly great white sharks. With their air supply steadily dwindling, the friends must navigate the underwater labyrinth of claustrophobic caves and eerie tunnels in search of a way out of their watery hell.

The strange and brutal deaths of Cory’s grandparents has haunted him for years. Determined to discover the truth, he has returned to the desolate region where they lived, along with a group of friends, to try and uncover the mystery. Ignoring warnings from the locals that the area is cursed, Cory and his friends soon realize that the legend is true, as the Demon Wind, possesses and destroys them, one by one, turning them into monsters from hell.