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A sudden storm forces everyone to leave school early, but you and your longtime crush accidentally get trapped inside the old school basement. The basement is dark, dusty, and almost never used. The door is locked from the outside, and neither of you has a phone with a signal. At first, the situation is awkward. You both argue about whose fault it is, but soon realize that blaming each other won't help. As hours pass, you discover old school records, forgotten classrooms, and strange clues suggesting that someone has been using the basement recently. Your crush tries to keep you calm while you both search for another way out. The two of you slowly become more comfortable, sharing secrets, embarrassing memories, and things you've never had the courage to say before. But then you hear footsteps above the basement. Someone else is still inside the school. Now you have to work together to figure out who it is, why they're there, and how to get out before they discover you.