Earth is on course for a devastating invasion from the Dark Dimension, forcing the world's mightiest heroes into unthinkable alliances, in this heartbreaking new novel in the Marvel: Crisis Protocol series

Doctor Strange created the Shadow Avengers to save the world from Dormammu, but instead they are about to disappear. When Asgardian heroes emerge from portals, the Shadow Avengers realize they have to do something. Loki, Venom and Green Goblin try to open a portal big enough for Dormammu.

From the Sanctum Sanctorum to the streets of NYC to beautiful Wakanda, the Shadow Avengers must stop Dormammu at all costs - but the Master, in all his devious wisdom, has something greater in store that will doom the world once and for all.