marvel avengers age of ultron junior novel

Yoto says: Relive the excitement of the film with this junior novel of Marvel’s Age of Ultron in audio form.
When Tony Stark and Dr Bruce Banner begin work on a global peacekeeping system, things go very wrong. Can Iron Man, Captain America, Thor, the Incredible Hulk, Black Widow and Hawkeye save the world from Ultron’s evil plan to destroy the human race?