Koo Mirae and Kang Yeosang met online and became friends. The two want to meet, but they can't. Mirae lives with controlling parents. The only time she can leave her house is if she's at the outside property. Mirae is like a doll, in a dollhouse, she can't leave, she's controlled, she was never really given the chance to grow up. Her home is like a prison. But when she met Yeosang, she felt free. And maybe he could free her. (And if this sounds like another book, that is not my intention).