The invasion has started, and no one in the MU is safe, not even the First Family of Comicdom! Aware that some of the Earth's most advanced technology and weaponry is housed in the Baxter Building, the Skrulls have neutralized the building--by transporting it and its inhabitants straight to the Negative Zone! With one member of the Fantastic Four M.I.A. and another "replaced," it's up to the remaining family members--not to mention Franklin and Val—to get back to our dimension, Skrulls or no Skrulls. But are any of our heroes who they think they are?
In Canada, Sue Richards is on a lecture tour. She calls home to check on how the kids are doing. Johnny says they're fine but Reed's disappeared somewhere with a look of determination. As she arrives in her hotel room, she surprisingly finds Reed waiting for her on her bed. He says he's there to be more romantic. Sue jokingly asks him who he is and what has he done with her husband. Reed then turns into a Skrull and grabs her with what appears to be invisible powers. The Skrull tells here that there is an invisible force-field pressing on her cerebellum. She struggles to ask where Reed is. The Skrull says he's already fallen as will the rest of her family and the world. She struggles against the Skrull and passes out.
Later at the Baxter Building, it seems that Sue has returned and walks past Johnny and the kids. A Skrull is impersonating Sue and is on a mission. The Skrull heads to Reed's lab in order to send Reed's technology away to the Negative Zone so that it can't be used against them.
Johnny tries to see what Sue's done while Ben grabs the kids. Johnny enters the lab just as the portal is swallowing everything in front of it. "Sue" looks at him as says, "Forgive me, Johnny."
In the living room, Ben opens the curtains to find they are no longer in Manhattan but appear to be in the Negative Zone. Soon giant bug like creatures begin attack the glass, causing it to crack. Ben grabs the kids again just as they begin breaking through.
Johnny begins to regain consciousness and Sue is there by his side. Seeing her, he flames on immediately. She asks him to flame down and tells him they are in the middle of a Skrull invasion. She tells him that every team has been infiltrated. Reed sent her to secure the Baxter Building. He asks her why she was so sneaky about it. She tells him that they may have already been compromised and insinuates that Ben is an imposter.
Meanwhile Ben is in the kitchen and secures the kids in a cabinet. He tells Franklin to watch his sister. Closing the door, he tells them not to come out until he says so. Behind him is a swarm of the alien insects.
Johnny stands in front of his sister thinking over what she's saying. She asks him to say something. When he says he's thinking, she points out that that isn't his area of expertise. He asks her what her favorite movie is. Sue rolls her eyes but Johnny insists she answer. She answers wrong so Johnny flames on again. He asks her why she brought them there. She points out it was a trap and again mentions his lack of intelligence. Johnny starts thinking about the way she's been talking to him and saying his name. The Skrull reverts and reveals that she is...Lyja, Johnny's ex (that posed as Alicia waaaaay back and married him).