Here are some awesome superhero stories about Iron Man, Captain America, Thor, Hulk, Hawkeye, Black Widow and Nick Fury as they fight the universe's biggest baddies and save mankind!

"Thor's hammer is missing again. The thunder god has a disturbing habit of misplacing his weapon--the mightiest force in the Nine Worlds. But this time the hammer isn't just lost, it has fallen into enemy hands. If Magnus Chase and his friends can't retrieve the hammer quickly, the mortal worlds will be defenseless against an onslaught of giants. Ragnarok will begin. The Nine Worlds will burn. Unfortunately, the only person who can broker a deal for...