Synopsis
This issue keeps switching between Vision and Virginia, but I have separated the 2 strands out.
Vision created a synthezoid wife Virginia with the brain pattern of Scarlet Witch. And children Vin and Viv with brain patterns with aspects of both. And a synthezoid dog Sparky to complete his family. But things didn't go well.
Virginia is talking to Viv in their kitchen. In a stammering voice she tells her daughter that Vision has gone to kill 'Uncle' Victor Mancha. Whether he succeeds or not she believes that they will be shut down as too dangerous to live.
She also admits that she caused the death of her daughter's friend Chris Kinzky (in #4) when his father Leon blackmailed her over the death of Grim Reaper (who attacked Ginny and the kids in #1). Angry Viv flees the house.
Left alone with the dog Virginia goes berserk with grief and kills Sparky. She sees that the dog has swallowed some petals of the Wundagore Everbloom. She takes 1 from his 'stomach' and eats it. This fulfils the conditions for the plant to show you the future. (Ginny had in earlier issues explored the memories of the Scarlet Witch, and this was 1 of the things she found there.)
Meanwhile Vision faces a gathering of heroes out to stop him. Victor has been arrested concerning the deaths of Vin and neighbours George and Nora Knowles (which Victor did actually cause in #9), which happened while he was spying on Vision for the Avengers. The synthezoid is here to exact revenge for his son.
Iron Man is 1st up to bat with a portable shield generator to contain the android, but Vizh blasts him unconscious before he can use it. Thor is next, but V lets Mjolnir ghost through him and then goes super-dense to slam the Thunder Goddess to the ground. Captain Marvel and Beast double-team but get the patented ghost-fist-through-the chest routine. Vision blasts Medusa and throws Nova at Captain America (Sam Wilson). Black Panther gets another chest-fist, and the 2 Spider-Men are hurled away. (We don't see what happened to the other heroes.)
Finally Vision enters Victor's cell to kill him. But Scarlet Witch comes with the astral form of Agatha Harkness by her side in a last ditch attempt to talk him out of it. Wanda points out that Vision defeating his friends was the precognitive vision that Agatha got from the Wundagore Everbloom. (Which is what caused the Avengers to send Mancha to watch him, which led to everything else.) But his ex-wife adds that the vision showed that Vizh killing Victor would be the line he could never uncross. But Vision gently renders her unconscious with a mild version of his ghost-fist trick. AH leaves weeping.
Now he's alone with his son's killer. Victor is ready to accept his 'punishment'. But then Virginia ghosts up through the floor and plucks his cybernetic heart out. Her voice has lost its stammer. She has saved her husband from the consequences of his plan. Victor dies content because now he won't become the future Victorius who destroys the future Avengers including his Runaways friend Gertrude Yorkes.