When S.H.I.E.L.D. was destroyed, being infiltrated by HYDRA in Captain America: The Winter Soldier, Tony Stark initiates a program to sleep in order to maintain peace, creating a robot high intelligence called Ultron to detect global threats, but things start to get complicated making Ultron for own mind, decided to eradicate all mankind so the mightiest heroes on the planet, including Iron Man, Captain America, Thor, The Incredible Hulk, Black Widow and Hawkeye, will be exposed to the ultimate test when the fate of the planet are put at stake. When Ultron emerges will depend on the Avengers stop their terrible plans, and soon uncomfortable alliances and unexpected action will pave the way for an epic and unique global adventure.