Synopsis
Last issue Black Knight popped in from Marvel-Earth and met Ultraforce, and Siren popped up claiming to have been appointed by the United Nations as their new member. before they could really get acquainted they had to face the menace of balls of light called Angels which have escaped from a Metabio lab and are converting humans into beings like them, each of which goes on to contaminate others. And the latest victim of 1 of the original Angels is the Ultraforce member Prime.
Siren isn't admitting that she isn't really a UN-based heroine but a mercenary thief who accidentally released the Angels while stealing some DNA data, but her weapons and fighting skills have no effect on the foe. Topaz of extra-dimensional Gwendor tries to kill them with blasts from her battlestaff. Avenger Black Knight protests that heroes don't kill (but she doesn't seem to succeed anyway). Metabio scientist Tagahashi claims that the Angels convert life-energy to light but dead Ghoul hopes he'll be immune to that as he goes to try to save Prime, who's taking a long time to get absorbed/converted. He calls to the Angel who's got his buddy and she drops Prime to concentrate on him. As he hits the ground Prime starts to dissolve into goo. But when the Angel makes contact with Ghoul she shrinks into her original ball of energy which Tagahashi traps in a container.
Team-leader Contrary notes that all the people who that Angel converted have become human again (and I think all that they converted, etc). But now they're falling from the sky to their imminent deaths. She uses her craft's grappler beams to catch all she can, and Prototype zooms around catching others. Siren is in her Tri-Fighter trying to keep the remaining Angels corralled. Topaz is protecting civilians and urging them to flee.
It's up to Ghoul to take out all of the other original Angels, thereby freeing all the converted humans. (Though no-one says how they know which are the originals.) He leaps on a 2nd 1, giving Contrary and Prototype more falling humans to save. BK, astride 1 of Contrary's collection of vehicles from last issue (which functions like the atomic steed he used in the Avengers), picks him up to take him to the next 1. Ghoul jumps through it from BK's steed, but then *he* is falling through the air. But meanwhile teen Kevin Green has managed to reintegrate the protoplasm of his Prime body and he catches his teammate. (Despite this not being the 1st time some of the team have seen Prime turn globby they still shrug it off and don't work out what Prime is, and that there's someone inside him.) Anyway it seems that now Tagahashi has all the original Angels in his containment chamber, and all the others are human again (and Ultraforce saved *nearly* all of them).
The heroes return to their Miami HQ and congratulate each other on a good job. Contrary offers Dane Whitman a place on the team but he intends to head for New York which is where Sersi would expect to find him. (He and Sersi left the Avengers there together but got separated in their interdimensional travel, but he hopes that she's somewhere on Ultraverse Earth.) But 1st the team have to satisfy the Press outside their building. They introduce Black Knight and Siren as new members.
But we know from last issue that Sersi landed in Africa, seemingly consumed by the madness that caused her to leave Earth-616. Now she's watching the Press Conference on a TV screen in a shop window, seeing Black Knight and remembering how her lover Dane came with her to voluntary exile (Avengers #375). But now we learn that she followed a voice in her head, flying from Africa to Chicago where she found a strange Gem (at the end of Eliminator #3). And we further learn that it is related to the 6 Infinity Gems that have also found their way here from Universe-616 (in the Rune/Silver Surfer 1-shot), and it wants to be reunited with them.