Marvel’s Avengers begins at A-Day, as San Francisco celebrates the opening of an Avengers West Coast Headquarters and an all-new helicarrier, powered by new experimental technology. The day turns tragic when a terrible accident results in mass destruction. Blamed for the tragedy, the Avengers disband.

Iron Man, Hulk, Black Widow, and Thor blame themselves for the mass devastation and the loss of Captain America. In the five years following A-Day, the team’s absence has devastating consequences worldwide. A new organization has risen - Advanced Idea Mechanics, otherwise known as AIM. AIM believes that science – not Super Heroes – is the key to protecting the world.

A teenager Kamala finds herself developing extraordinary polymorphic and healing powers as a direct result of exposure to Terrigen Mists during the A-day incident. With the Avengers disbanded and Advanced Idea Mechanics turning public sentiment against Super Heroes, Kamala hides her abilities from the world.

Kamala’s unwavering loyalty to the Avengers, intelligence, inquisitive nature, and ever-optimistic personality lead to a huge discovery when she uncovers a shocking conspiracy. As Kamala learns to harness and embrace her powers, she finds the will and the way to reassemble Earth’s Mightiest Heroes.