When Meera moves into her family's new house, she doesn't expect much - just boxes, dust, and creaky floorboards. But everything changes the day she finds a hidden letter in the attic. It's signed by a girl named Ha-eun - and it ends with one haunting sentence: "If you're reading this... I'm already gone." Now, Meera must follow the clues, uncover the truth, and face the shadows waiting behind the mirror. Some secrets don't stay buried. Some girls... don't stay missing.