Captain America #24

Arnim Zola is reporting to the Red Skull that all is going according to schedule when his rebel daughter Jet Black arrives to oppose him. Zola reveals that she has been his pawn all along, that even her turning against him was part of his plan. Falcon then enters the room and carries Jet and Zola through a high window; Sam scoops up Jet as the villain plummets to the street below. Sam contacts Steve Rogers to tell him that they found Sharon Carter alive in the tower—Steve calls Ian Rogers who confirms that she raised him as a mother after Captain America departed Dimension Z. Falcon battles Zola while they struggle over Jet’s loyalties. Ian rescues Sharon from the tower but they learn Zola’s hidden plot: there is a bomb set to destroy the Avengers and all of New York. When Sam learns that Zola can trigger the bomb with his telepathic antennae he has Redwing rip it off. Big mistake as the destruction of his antennae merely sets the bomb to detonate in 30 seconds. Iron Man tries to stop it but his Unvenger counterpart drags him down. Falcon seizes the bomb and, with a word of farewell to Steve, flies the bomb high into the stratosphere where it explodes….

Hulk and Thor also appear but couldn't be worked into the synopsis.