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 his revenge on the team. Also included in these stories are appearances from the X-Men and Magneto.

Dr. Henry Pym, the Avengers' resident scientist, has had many heroic guises - and this collection spotlights them all. From his pre-Avenging days to his various turns as Ant-Man, Giant-Man, Goliath, Yellowjacket and even the Wasp, Dr. Pym has been a nearly constant presence on the Avengers roster since the inception of the team.