Join fan-favorite Marvel Super-Heroes from Avengers: Doomsday in this Step Into Reading Step 3 leveled reader! Find action, adventure, and teamwork, as you meet your favorite Marvel Super Heroes as they come together to save the day from the villain Doctor Doom. Perfect for young Marvel fans who are eager to read about their favorite heroes and villains from Avengers: Doomsday ! Step 3 readers feature engaging characters in easy-to-follow plots about popular topics for children who are ready to read on their own.