The seven Avengers from various time-periods are still protecting Rick Jones from Immortus. But now they have decided to take the fight to Immortus in Limbo, leaving Rick safe in the time-Sphinx they took from Kang.
Giant-Man and Yellowjacket cobble together a time-drive that Giant-Man can wear, a bracelet for Wasp that will get them back from Limbo to the Sphinx, and Yellowjacket has a device to hopefully locate Immortus in his castle. Songbird creates a sound-platform to carry them, and Captain Marvel (Genis-Vell) will use his cosmic awareness to guide them to the castle. Captain America and Hawkeye are along for the ride.
Before they leave, Captain Marvel impresses upon Rick that he mustn't leave the Sphinx. But Rick doesn't like Marvel, seeing him as tarnishing the name of the Rick's dead old friend the original Captain Marvel, despite the fact that Marvel is the original's son.
On the way they see more chronal flashes. One set of visions concerns the Vision and the original Human Torch, and conflicting statements (even by the same person) as to whether they are internally similar. Other views are of previous encounters between Avengers and Immortus:- a synchro-staff guiding the Avengers through the history of Mantis in Avengers #133-135 (while another one shows Vision his own origins); and the first time they met Immortus in Avengers #10, which they can't remember because Enchantress rewound time to make it not happen.
Immortus is aware of the Avengers once they enter his castle, and contrives to separate them all. Then he presents each with a scenario designed to play on their doubts and fears.
Hawkeye faces Tempus (resurrected yet again) who chips away at his youthful insecurities. But Hawkeye is bolstered by Wasp's confidence in making him team leader in Tombstone, and Songbird's memories of him leading and training the Thunderbolts. When giant Tempus tries to regress him to a primordial blob, Hawkeye chooses the moment when he has regressed to having his growing powers, which he recently lost in the Kree-Skrull War, and uses them to out-giant his foe.
Captain America meets various incarnations of Nick Fury who try to persuade him how pointless it is to keep on fighting.
Wasp tries to follow Giant-Man's voice but she hears many of him from various stages in his life, and doesn't know which to heed. I guess this reflects their turbulent relationship, and the many facets of his unstable psyche. She eventually does home in on the right one.
While Wasp tries to find the current Hank Pym, a much earlier version of Pym is being shown his future. This version was brought into this adventure from Avengers #59 where he had a breakdown and created a new identity for himself, Yellowjacket, who denied being Pym. The future includes Yellowjacket reverting to Henry Pym, having another breakdown, and landing in jail. Yellowjacket is determined not to accept this fate.
Songbird faces a jury of people she feels she has failed in the past. She is rescued by Captain Marvel who kisses her. It turns out that he is from further along their future timeline than she is, from a time when they are in a relationship.
Libra is wandering around the castle, but is content not to interfere because the Avengers are doing well on their own.
Because their stealth approach has obviously failed, Wasp signals for the Avengers to retreat to the rendezvous point, but Yellowjacket is missing. He has used local insects to find Immortus, but Immortus has captured him. The Avengers reluctantly leave without him.
When they get back to the Sphinx they find that Rick has left in a chronospere. Hawkeye has picked up a synchro-staff on his travels, which hopefully can be just as informative as it was the last time the Avengers had them.
Meanwhile Yellowjacket has offered to betray the Avengers if Immortus will promise he can remain Yellowjacket and still marry the Wasp.