The Avengers face the terrifying inhuman might of the robotic Sentinels. Can Earth's Mightiest Heroes stop the Sentinels' genocidal plan to eradicate every mutant in the world? Plus, the Grim Reaper returns to exact revenge on the team. Also includes guest appearances by Marvel's merry mutant band, the world-renowned X-Men and their arch-nemesis Magneto! Collects Avengers #102-112.