In this first episode of the series, Bruce Banner attempts to cure himself of the Hulk but his experiment is shut down by General Ross and Major Talbot. They capture the Hulk and take him to the Gamma Base, where Banner recalls his origin. Suddenly, the Abomination arrives on the scene, sent by the Leader and Gargoyle to capture Banner, and it's up to the Hulk to stop him.

After escaping General Ross, the Hulk meets the Gamma Mutant Warriors and hides out at their base. While there, the Abomination kidnaps Banner and takes him to the Leader. Will Betty and Rick be able to save him before the Leader and Gargoyle find the key to his gamma mutation?

Hawkeye has faced his fair share of super villains in the past, but something doesn't sit right about his last encounter with the Incredible Hulk. Why did the Hulk save his team? And what's going on behind the scenes that Clint doesn't know about?

HYDRA's maniacal scheme to win World War II rages out of their control--and in the midst of the chaos, a chance for Captain America and Bucky to stop the Red Skull, once and for all!

It's the final episode! At a Mutant/Human Relations Summit, Henry Peter Gyrich attacks and severely injures Professor Xavier with an energy disruptor. Meanwhile Magneto makes final preparations to take over the world with his mutant army, but on the eve of the invasion Cyclops, Wolverine, and Jean Grey infiltrate Genosha to tell Magneto that Xavier is dying. Magneto halts his plants out of respect to his long-time friend and joins the X-Men as they say farewell to their beloved mentor.

In the heat of World War II, Captain America and Bucky mount a desperate assault against a top-secret HYDRA base in Norway. But things take a turn for the worst when they come face to face with Hydra’s own Super Soldier…the nefarious Red Skull.

News from the front! Witness the story of Steve Rogers, the man who would become Captain America!

The Hulk may be able to take on tanks, assault choppers, and heavy artillery, but what about two of S.H.I.E.L.D.’s most highly trained agents? Introducing…Hawkeye and the Black Widow!

Bruce befriends Mitch McCougthen who offers his help to find a cure for the gamma radiation responsible for turning Banner into the Hulk. But when their experiment goes wrong, McCoughten turns into Zzzax, a being of pure energy. Can the Hulk stop him before he destroys a dam?

In London, England's Victorian era, two scientists, Dr. James Xavier and Dr. Nathaniel Essex, hotly debate Charles Darwin's theory of natural selection. Essex believes mutants are the next genetic step forward and begins a bizarre experiment involving mutant evolution. The origin of Mr. Sinister is revealed, as Dr. Xavier attempts to stop Essex before he goes too far.

Thor is summoned back to his home of Asgard to find the realm eternal under siege by an army of Frost Giants. Now only the might of Thor's legendary hammer Mjolnir can turn the tide!

The battle rages as the Incredible Hulk trades blows with the Absorbing Man across the Nevada desert, and just when it seems like things can't get any worse the Hulkbusters join the fray with orders to take down the Hulk.

With backup from the world peacekeeping taskforce known as S.H.I.E.L.D., Iron Man faces down HYDRA. But are his allies any better than his enemies? Who can Tony Stark really trust?

"Helping Hand, Iron Fist": Bruce Banner goes to Los Angeles to ask Tony Stark for help. Wanting to help his friend, Rick Jones follows Banner and finds himself in the middle of an earth-shattering battle between Iron Man and the Hulk. Will Iron Man and War Machine be able to cure Banner before Gabe Jones and his S.H.I.E.L.D. agents take down the Hulk?

Professor Xavier receives a call for help from the parents of a new mutant, Sam Guthrie. The X-Men travel down South to visit the new mutant and find that an Army official is planning on using Sam to do his bidding!

"Man to Man, Beast to Beast": Bruce Banner travels to Canada to find his old friend, Dr. Walter Lankowski and try to get rid of the Hulk once and for all. But when Bruce finds his friend, a terrible secret is revealed!

"Innocent Blood": Ghost Rider comes to town, and he's tracking the Hulk! Simultaneously, Talbot is also looking for the Hulk and uses an infectious blaster on him. Now, the only way to save Banner's life is to make the Hulk madder than he's ever been before!

Jubilee and a group of school children are caught in a cave-in while touring a cave on Mansion property. To keep the kids calm, Jubilee tells a medieval fairy tale of knights, princesses, trolls and dragons that strangely resemble some of her fellow X-Men.

"Doomed": Bruce Banner travels to Washington D.C. to see his cousin, Jennifer Walters. The reunion is interrupted when Doctor Doom captures them, planning to use his mind control device on the Hulk. In the process, Jennifer is transfused with Bruce's blood and becomes the She-Hulk!

The Earth's magnetic fields are being disrupted by the Zodiac gang, whose primary objective is to obtain an ancient meteorite buried beneath an island on Earth. With the Earth's survival at stake, the Avengers have a final showdown with the Zodiac gang!

"Fantastic Fortitude": Banner and She-Hulk go to New York hoping to find Reed Richards and ask for help in finding a cure for the Hulk. However, the Fantastic Four is on vacation, except for the Thing! And when the Ogress and the Leader's Gamma Warriors decide to attack the trio, it's sure to be clobberin' time!