The next phase in the ongoing story of the Avengers happens in the midst of other ongoing stories that will have an impact on the movie. There is a great deal of speculation surrounding the film and how the team will form together again. The new threat is obvious but how that threat happens is still unknown. Here are some possible plots that may develop in the Age of Ultron.
SHIELD is rebuilding
The agency of SHIELD has been decimated by an internal sabotage by the terrorist organization Hydra. Captain America: The Winter Soldier revealed the depths that Hydra had infiltrated SHIELD and how desperate the situation became but Captain America was able to stop one of the major threats. The story continued in Marvel’s Agents of SHIELD.
The agents found themselves in a fight for the survival of SHIELD. The final episode found them with the defeat of one branch of Hydra and Agent Coulson named the new director of the agency. His task is to rebuild the organization from the ground up with little or no resources.
Hydra rises again
One of the villains in the new Avengers movie is going to be Baron Wolfgang Von Strucker. He made a brief appearance in the closing credits of the Winter Soldier. Hydra has resources and manpower that may dictate a response by the Avengers because of the loss of SHIELD. Hydra may be part of the cause that makes Ultron go insane.
Ultron fills the gap
Ultron is created by Tony Stark to fill the gap created by the downfall of SHIELD. Ultron is the newest line of defense against potential alien threats like the invasion in the first Avengers film. Ultron may at first seem like a good solution but things soon go wrong. A cause for Ultron becoming evil has not yet been determined. It could be that Hydra does something to the programing and causes the problem.
Tie in with Guardians of the Galaxy
The Avengers may carry on a part of the Guardians film because of Thanos. Thanos will play a role in the Guardians of the Galaxy but it is still unclear. Thanos will also play a role in the Age of Ultron and will be challenging the Avengers in some way. It may be that Thanos does something to turn Ultron against the Avengers. Likely the events will lead to a continuation of the Infinity Stones story line that started in the first Avengers movie.