Recap / Portal 2 Prologue

Sometime following her defeat of GLaDOS and her near-escape from Aperture Science's facility, Chell wakes up to find herself within what appears to be a motel room, with an AI announcer informing her that she's been in suspension within the Aperture Science Extended Relaxation Center for fifty days, and has being revived to participate in a physical and mental wellness exercise. After participating in the exercise - which consists of looking around the room, staring at a painting and listening to music - Chell returns to her bed at the announcer's direction, returning to suspension.

The next time Chell wakes up, she finds the room in a neglected state, with the announcer from before indicating that an undetermined amount of time has passed since she was last awake. A voice calls out to her from behind the room's door.