Series was a tie-in to the Secret Invasion crossover event. Story followed the apparent return of the original Captain Mar-Vell, who had traveled forward in time from a point before the events of his death.
In time, this Mar-Vell eventually remembers that he is a Skrull sleeper agent named Khn'nr, who will aid the Skrulls in their invasion of Earth. However, Khn'nr eventually decides to follow the spirit of Mar-Vell and defies his people, becoming mortally wounded in the process. Before dying, Khn'nr asks Noh-Varr to take up the mantle of Captain Marvel, which he does as a member of the Dark Avengers.
