Ero, Spider-Man's mysterious Other revealed before the Civil War, has finally revealed herself. She's kidnapped Flash Thompson, intending to use him to mate, and create hudreds, if not thousands more like herself... an army that she will use to kill Spider-Man, and in her mind, correct the cosmic imbalance caused by his return fromd death. Peter arrived too late to stop Flash from being kidnapped, but can he find her lair in time to save him from this fate? Being devoured from the inside by thousands of Ero's young?