From superstar creators Nick Spencer, Steve McNiven, Andrea Sorrentino, Leinil Yu and Daniel Acuña comes SECRET EMPIRE! The Marvel Universe is under siege from within. Due to the manipulations of the Red Skull, Captain America--secretly a true believer in the cause of Hydra--is finally set to enact his master plan. Yet as the dominoes begin to fall, there are those who would rise to meet the challenge. Hydra’s ascension stands as a rallying cry, and Avengers, Champions, Guardians, Defenders, X-Men, Spider-Man and more must put aside their differences and come together as one: The first and last line of defense against Hydra!