The series opens with Helly R waking up on a conference table with no memory of her identity or the outside world. Mark Scout, recently promoted to department head after his "best friend" Petey suddenly left, administers an orientation survey. Helly attempts to leave through a stairwell but repeatedly finds herself walking back into the hallway, illustrating the inescapable nature of the "severed" floor. She eventually watches a video of her "outie" self consenting to the procedure, which confirms her imprisonment.

The following summary explores the major plot points, themes, and cinematic techniques of Season 1, Episode 1, "Good News About Hell." Plot Summary: The Duality of Existence

The episode introduces the concept of "severance"—a surgical procedure by Lumon Industries that bifurcates an individual's memories into a work self (innie) and a personal self (outie).