[1] Marvel's previous licensed theatrical show, Spider-Man: Turn Off the Dark, a Broadway musical, was plagued by several injuries.
[2] In September 2013, regional casting calls began in Los Angeles with another set held in Las Vegas, New York, and in Orlando in October.
After Tampa, Florida, and New York City, the show stayed on the east coast which includes stops at Washington D.C., Philadelphia, Nashville, Miami, and Atlanta.
Then Age of Heroes went to the Midwest in the fall follow by Canada and circling the USA until early 2019, when the show goes overseas.
The Avengers, Spider-Man and the X-Men work to stop Loki and the other involved super villains (Red Skull, Madame Hydra, Electro, Green Goblin, and Doctor Octopus) to save the Earth.