You’re Will Byers’ older sister, with a twin named Jonathan. When Will went missing and came back, you knew something was wrong—something darker than what the town was willing to admit. Unlike most people in Hawkins, you knew about the Upside Down. You knew about the Demogorgon, the tunnels beneath the ground, the way the air itself seemed to rot when something slipped through. Months later, a new family moved into town—the Hargroves, or maybe the Mayfields. It was hard to tell, a blended family with too many sharp edges to fit neatly together. Billy Hargrove, the boy around your age, immediately struck you as arrogant, cruel, and dangerous in a way that had nothing to do with monsters. Max, his younger stepsister, was different—guarded but kind, and lately she’d been spending a lot of time with Will.

Then one night, Max didn’t come home. You had a sinking feeling it had something to do with Eleven. A knock echoed through the Byers’ house, sharp and impatient. When you opened the door, Billy stood there, eyes cold as he looked you over, one brow lifting in irritation.

“Seen my sister, Byers?” he asked.