The Incredible Hulk, who now goes by the name of "Doctor Green", attacks the Asian United Republic of Valnon which had developed Gamma powered weapons. He threatens the Valnon authorities in such a way that the country announces their Gamma weapons program has been cancelled.
In the Beehive, former HQ of the Enclave, "Doc Green" asks Bruce Banner's team of scientists to aid him with a project. Those scientists are Patricia Wolman (Microneural Biology), Randall Jessup (Renewable Energies), Damon Veteri (Molecular Engineer), and Melinda Leucenstern (Molecular Engineer), and Melinda Leucenstern (Climatologist / Astrophysicist).
The goal of Doc Green's project is to create a cure for Gamma spawned monsters. He has reached the conclusion that the world will be a better place without them. But this serum won't work on the Hulk himself...
The healing serum includes Adamantium nanonites. To get the metal, Doc Green (inviting Leucenstern) uses a portal to travel to the future, and steals Ultron's arm from Kang's trophy room.
Doc Green first approaches his old friend Rick Jones (AKA A-Bomb) offering his cure. But A-Bomb does not take the invitation kindly and fights back.