Between Shadow and Light

When Will Byers disappears, no one imagines what truly awaits him on the other side.
Y/N, a determined and protective girl, joins Jonathan and Nancy in the search for him-but what was a simple quest turns into a nightmare.
While saving Nancy, she ends up trapped in the Upside Down, where she finds Will and does everything she can to keep him alive.
While the real world believes Will is alone, she becomes his invisible guardian.
When they both return, the scars from the other side remain.... and Steve Harrington is the first person to see that, behind her smile, there is something that still connects her to the shadows.