"Avengers: Zombies Assemble" is a manga adaptation of the Marvel Zombies storyline, blending the iconic Avengers characters with a horror-infused narrative. The story begins with a mysterious virus spreading across the Marvel Universe, infecting Earth's mightiest heroes and turning them into ravenous, flesh-eating zombies. The Avengers, including Iron Man, Captain America, Thor, Hulk, and others, fall victim to the infection, transforming into grotesque versions of themselves. The virus spreads rapidly, decimating the superhero community and plunging the world into chaos.

As the infection takes hold, the remaining uninfected heroes, such as Spider-Man, Black Panther, and a handful of others, struggle to survive in a world overrun by their former allies. The infected Avengers retain their powers and intellect but are driven by an insatiable hunger for human flesh. This creates a grim dynamic where the heroes must confront their friends and teammates, now turned into monstrous adversaries. The narrative explores themes of survival, morality, and the collapse of societal order as the uninfected heroes attempt to find a cure or escape the apocalyptic scenario.

Key plot points include the discovery of the virus's origin, which ties back to a failed experiment involving the Sentry, a powerful superhero with a dark secret. The Sentry's transformation into a zombie accelerates the spread of the infection, leading to catastrophic consequences. The story also delves into the psychological toll on the survivors, particularly Spider-Man, who grapples with guilt and despair as he witnesses the fall of his mentors and friends.

The manga features intense action sequences and dramatic confrontations, such as the climactic battle between the uninfected heroes and the zombie Avengers. The infected heroes' relentless pursuit of their prey creates a constant sense of tension and urgency. The narrative does not shy away from the gruesome and tragic aspects of the scenario, emphasizing the horror of seeing beloved characters reduced to monstrous forms.

"Avengers: Zombies Assemble" presents a dark and compelling reimagining of the Marvel Universe, combining superhero action with elements of horror and survival. The story remains faithful to the core traits of its characters while placing them in an unprecedented and dire situation, offering a unique and gripping take on the Avengers mythos.