The Lorelei planetoid is a barren, rocky planetoid with an enormous face of a beautiful woman carved on its surface. Captain Jark Hudson sees the monument, recalling the Greek legend of the Lorelei who lured Ulysses. Like the legend, he is hopelessly lured into the planetoid. As Jark and his crew of lonely spacefarers land, they note the eyes of the carved face contain jewels. Greedily, they move toward them. A trapdoor opens beneath them, and the three men fall into an enormous web of Giant Spiders.