In a shocking turn of events, a man's body is invaded by a mysterious force, causing him to grow an enormous cock while his body diminishes to minuscule size. Trapped in his new, tiny form, he grapples with his colossal member, finding both pleasure and challenge in its use. As he explores his transformed body, he seeks a way to reverse the possession, longing for the freedom of his old self, even as his new form brings unexpected delights.