When the forces of destruction are too great for just one Super Hero alone, AVENGERS ASSEMBLE! Join the First Avenger Captain America and the Earths mightiest team of Super Heroes in the Captain America Sticker Activity Book. The Avengers are ready for action! Use your stickers to blast your way through pages of puzzles and activities. Super Villains are threatening the Earth, so get your brain ready for blast off ... the Avengers needs your help!