The Avengers (Crystal, Hercules, Quicksilver and Vision) plus Hawkeye and Swordsman (Philip Javert) are recovering from their battle with Iron Man at Janet Van Dyne's estate in Avengers #393. They can't find Crystal and Quicksilver's daughter Luna, who was taken to safety by Tuc in Avengers #393 after Crystal and Quicksilver were rendered unconscious.
Masque tells them how she escaped from Stark's Arctic bunker in #323, after Iron Man took herself and Marianne Rodgers there between #321 and 322, to be guarded by Machinesmith. Then she walked to a Norwegian listening post and stole the plane she crashed outside here in Avengers #393. She came to warn them about Stark (a bit late), and ask them to rescue Marianne Rodgers from the bunker.
Century teleports in from Force Works HQ with Moonraker and Avengers' leader Black Widow. They tell the Avengers that Stark has triggered a temporal weapon under Force Works HQ, in War Machine #22, which will destroy the world in less than a day.
Moonraker explains that he is really Libra (Gustav Brandt), whose soul was saved by the Priests of Pama when Libra died. He has been sent to warn them that his daughter Mantis has allied with Kang against them.
Black Widow checks in with Force Works. The other end of Black Widow's phonecall is seen in Force Works #20. She learns that they are trying to penetrate Stark's secret sub-basement to disable the weapon. The Avengers hear about Amanda Chaney's death in Force Works #19, another person killed by Iron Man.
Giant-Man is still watching over Jan, fatally injured by Iron Man in Avengers #393, and now in a cocoon.
Century is to teleport a small team to the Arctic bunker, in case Iron Man is hiding there.
Iron Man has returned to the bunker to find Masque gone, the robotic Machinesmith broken and Marianne Rodgers recovering consciousness. He sets about mending Machinesmith. Marianne uses her telepathy to find that Kang has been poisoning Tony's mind for many years. She sees this as connected with his string of broken relationships. And with his hiding inside his armour, and behind his skilled obsession with technology.
Marianne can't use her telekinesis on Stark because he fitted her with a psionic damper after #321. But he left her telepathy functioning. She suggests that he did this deliberately so she could contact his buried goodness. And also find out about Kang's machinations. Including the hint below about young Tony's innocence, which will prompt the 'solution' in Avengers: Timeslide.
Century arrives outside with Crystal, Moonraker and Vision. Stark retreats inside an inner command centre, and turns the bunker into a mobile (but slow) fortress.
Marianne telepathically tells the Avengers that Tony was free of the evil a long time ago, before it was planted in him.
Century teleports the Avengers away. A girl appears in the middle of the teleportation trip. And when they arrive back at Jan's house, Moonraker isn't with them.
Kang and Mantis have Moonraker prisoner. Mantis blinds him, to make him more like Libra.
This leg of the Crossing continues in
AVENGERS #394.
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