Synopsis
Last issue Blackheart, son of Mephisto, stoked the negative emotions of the Champions members and took control of them. Only the original members Brawn (Amadeus Cho), Ms. Marvel (Kamala Khan), Nova (Sam Alexander), Spider-Man (Miles Morales) and Viv Vision have successfully resisted and now he's pitched the others (Bombshell, Dust, Falcon (Joaquin Torres), Ironheart, Patriot (Rayshaun Lucas), Pinpoint, Power Man (Victor Alvarez), Red Locust, Snowguard, Wasp (Nadia Van Dyne)) against them outside Viv's house.
In #8 Viv was attacked by a controlled Ironheart. Her consciousness was damaged and Viv 2.0, her previously-evil 'twin', took over. Now Viv 1.0 reawakens and 2.0 brings her up-to-date. 2.0 explains as she fights that she's willing to hand control back to 1.0. Force alone isn't going to allow the 5 to beat the 10. What's needed is 1.0's more passive abilities.
Spider-Man's webbing immediately incapacitates Pinpoint. Ms Marvel has seamlessly fallen back into the team leader role she abandoned in #6. She says the newer Champs aren't used to teamwork and she suggests her side keep swapping opponents to confuse them. Brawn and Nova combine to bring down Power Man. But Ironheart has developed a weapon to disrupt Viv's phasing ability and now has the synthezoid at her mercy. But this is when 1.0 apologises for trying to kiss Riri Williams (in the last issue of the previous series). It was this action that Blackheart had blown up out of proportion, but now Riri throws of his influence and rejoins the side of good.
Ironheart generates a very bright flash of light followed by ultrasonics which stop all the fighting. Blackheart tries to regain control by stoking her hatred again. Spidey tells him to stop but Blackie wants revenge for his previous defeat by the boy (#1-2 of Miles' 2016 Spider-Man series). He manages to latch on to Brawn's anger at SM making a deal with Mephisto (#2) and Ms Marvel's disappointment when Miles quit the team (#4). But Nova and Viv still stand by him against all the others.
The villain keeps playing on their doubts and fears but Miles realises the way to combat that. He removes his mask so they can all see his face. He admits that the deal with Mephisto cost the life of an innocent girl, but he accepts the guilt and will live with it. Kamala wavers but it is Ironheart who strikes at Blackheart. And then suddenly *all* the Champions are free to fight him.
As he lies beaten Mephisto arrives to drag him back to Hell. The devil had begun a long slow campaign to break the Champions' spirits but now his impetuous son has thrown it all away. But before he leaves Mephisto advises them that all their struggles will be in vain and eventually despair will wear them down.
Various people hug and make up. Ms Marvel gives them all a stirring speech about facing the future together. (But that can't disguise the fact that this series is now cancelled.)