As the X-Men return home, Lorna Dane and Alex Summers summon them to a meeting. During the meeting, the X-Men learn of an impending invasion and an old friend and mentor is the only one with the power to stop it.
Zo commands Captain Mar-Vell to destroy the Kree home world in order to stop a destructive force from spreading throughout the universe. A fugitive from the Kree, Mar-Vell returns to his home planet and attempts to save both his home world and that of life on every other planet.
Captain Mar-Vell heads towards the pagan diety, Tam-bor, and is confronted by Ronan the Accuser. Intervention at the hands of the Supreme Intelligence puts an end to the battle and answers are revealed to the Kree hero.
Buried underneath a layer of rubble with minimal oxygen, the Unicorn and Iron Man make an uneasy alliance. Using the Unicorn's weapons and Iron Man's energy source, the two head to a fateful battle with the Red Ghost.
Nick Fury is the target of an assassination by a hitman known as Bullseye. Hoping to collect on Hyrda's million dollar bounty, the mercenary tracks Fury to a concert in Central Park and gets ready to fire. Will he hit his intended target?
The Crimson Dynamo returns and fights Iron Man to a standstill due to Tony's constant fear of his heart failing due to stress. Ill content with holding back in every fight, Iron Man's wearer is replaced by a boxing prize fighter with a secret that could be fatal.
Eddie March sits on death's door. Tony laments over his fallen comrade and feels a fury build inside himself. Alex is revealed to Janice as the Crimson Dynamo. All this culminates with the return of Titanium Man. Will anyone escape unscathed?
Dr. Strange is given one hour on Earth before entering Nightmare's dimension for a showdown. Strange spends time with Clea before battling minions and confronting the master of the dream dimension, who has a new trick up his sleeve.
Dr. Strange is held defenseless and at the mercy of Nightmare as the time for his foe to strike at Earth hurtles forward. In a desperate attempt to salvage the battle, Dr. Strange brings forth the Juggernaut to Nightmare's dimension.
Madam Masque washes up a beach where a doctor takes her in and promises to help her. Meanwhile her gold mask finds its way to S.H.I.E.L.D, Sitwell, and Stark, prompting a search for the woman who once went by Whitney Frost.
Tony inspects an one of his island research bases which is working on a new invention that harnesses solar power. Namor discovers pollution destroying sea life for miles and attempts to destroy the source, leading him to the very island Tony is inspecting.
The Collector captures Pepper and Happy in search of the creature known as the Freak. Can Iron Man and the Collector reach an agreement that would help the Collector satisfy his longing for a coveted item in exchange for his captives' release?
Iron Man and Eddie March head to Bay City for a groundbreaking ceremony on a new community center. When dissenters try a peaceful demonstration, Firebrand stokes the flames and the protests reach riotous proportions.
Tony receives a summons from a woman out of his past. While en route he and Sitwell come across the her unconscious form in the woods and head towards a hospital to get help. Once there, they uncover the mystery of the newly empowered Controller!
Following a violent storm aboard his boat, Tony Stark discovers a boat filled with political refugees. Learning of a machine called the Overseer that is being used to oppress an entire population, Tony suits up and heads for the small island nation.