Conflict arises when the merciless Kree and the Skrulls go to war, placing the Earth in danger as it waits for help from Captain Mar-Vell and the Avengers.
Nick Fury and S.H.I.E.L.D. bring together Earth's heroes to form the Avengers, including Iron Man, Captain America, Thor, the Hulk, Black Widow, and Hawkeye, and together they must battle the Asgardian Trickster known as Loki.