Watch 123Movies. After believing her date has ghosted her, socially anxious history student Maeve attends a Halloween party, hoping to escape her feelings of isolation. There, she meets Brittany, a confident partygoer dressed as Britney Spears, and the two bond over their costumes and shared experiences of loneliness. But as Brittany encourages Maeve to embrace the night, an unusual encounter reveals that this Halloween party may hold more surprises than Maeve expects.