Professor Xavier suffers a concussion. This concussion Create dangerous ramifications for his mind. Balancing all the responsibilities of being the crux of the X-Men, we get a good look of all his worries and responsibilities. The greatest responsibility is manifested in all the evils of a previous mental foe.: The shadow King. Previously fought off by Xavier, now he uses the concussion to leverage his way outside of Xavier's mental barriers. Because of this, jubilee wolverine and especially Storm fight off mental attacks by the evil demon. This episode balances an Xavier backstory, an interesting plot, loads of cool character plot points and explorations, and many other aspects of an interesting X-Men story. The scale of this episode seems so small yet so crucial. Amazing episode.