The Avengers assemble to save New York City from the threat of the Red Skull and his Hydra forces. In the midst of the battle, the Avengers are unexpectedly joined by Black Widow's father, Red Guardian, which doesn't go over well with Natasha.After an argument with his daughter about his well-intentioned helicopter parenting, Red Guardian disappears under mysterious circumstances. As Black Widow and the Avengers investigate, they discover that the villainous Collector is kidnapping every character who has "red" in their name. But despite their best efforts, the Avengers are unable to stop the Collector from kidnapping his next victim, their friend Red She-Hulk.Down but not out, the Avengers now seek out the one person who has the skills to help them—Wolverine. Determined more than ever to find her father, Black Widow convinces Wolverine to join the Avengers to help them find the Collector and his prisoners. But once they locate Collector's secret lair the Avengers find a lot more than they bargained for. Will the Avengers be able to rescue Red Guardian and the others, or will they permanently become part of Collectors newest collection?