After the Nova Corp and Xandar was decimated in Avengers: Infinity War, Richard Rider (AKA Nova) and others are helping repair their home while an old threat prepares to attack. Meanwhile on Earth, Arizona teenager Sam Alexander discovers a black helmet belonging to his late father who served in the Corp years ago before his untimely disappearance. Determined to find his father, Sam dons the helmet and ends up crossing paths with Rider, who (alongside Xandar) has been thrusted in a war to determine the fate of the galaxy.
