After the implantation of the prologue, the soul wakes up inside her body, "twined […] inescapably into its ever breath and reflex until it was no longer a separate entity. It was me." (1.4)
As she's struggling to adapt to all these new senses—sight, sound, taste, smell, uncontrollable desire to eat Cheetos—she experiences her first memory, the memory of her new body's last few minutes.
The narrative shifts to present tense (and a sans-serif font) to show us this last memory, a memory of a woman pursued. She throws herself down an empty elevator shaft instead of letting her pursuers catch her.
Back to the present: our narrator is thinking about what she just remembered (chapter title alert!) when she's hit with another memory. This one is brief, but powerful: a face.
She doesn't know the face, but she knows the face, if that makes sense. (It doesn't, but it will, don't worry.)
Also, even though she doesn't know what studliness is, she knows this man she's seeing is a Grade-A hunk.
Right before someone comes into the room, our narrator hears a voice. It's a voice inside her head, and it's not her own. "Mine," (1.51) it says. Creepy!
Our narrator fights back, but in a two-year-old-fighting-over-her-favorite-toy kind of way: "Mine […] Everything is mine." (1.54)