When Professor Xavier begins to experience terrifying psychic attacks, the X-Men are drawn into a mysterious new conflict. The trail leads them to the Microverse, where they encounter the Micronauts, a team of heroes defending their own realm. Together they face the growing menace of Baron Karza, who forges a terrifying bond with Xavier’s dark side. What begins as a rescue mission turns into a dangerous struggle against an enemy who threatens both the Microverse and Earth itself.