When Magneto's on trial, he needs all the help he can get; he finds it in the remnants of his former fortress, Asteroid M! The X-Men aren't sure what his scheme is, but they're positive they don't want the Avengers and the Soviet Super-Soldiers to find out first! Multi-team warfare with the eyes of the world on all three! Also featuring the X-Men's fabulous first fight with the Avengers, to keep them from unleashing the legendary Lucifer! This title collects "X-Men vs. the Avengers" numbered 1-4, and "Uncanny X-Men" numbered 9.