Ten alien beings arrive on Earth in the form of glowing orbs of light. In an abandoned warehouse, they find ten human males unconscious in a pile. The aliens enter the men and take over their brains. At first, they have difficulty making their host bodies move, talk, and eat--like infants learning to navigate the world. Enter Father, one of their alien species who has studied humankind. Father teaches them what it means to be a man. One of the aliens, named by Father as “10”, struggles with the basics of manhood: for example, finding human females more sexually appealing than males. Horrified that his secret might be discovered, 10 devises an escape from the training warehouse.