Late at night, an unknown call rings on your smartphone. The screen displays only one name: "Mary."

When you timidly answer, you hear a lovely voice like the tinkling of bells. "I'm Mary. I'm at the station in your town now." Thinking it's just a harmless prank call, you hang up, but it rings relentlessly every few minutes.

"I just turned the corner of your house." "I'm right in front of your front door."

Swallowing your fear as she steadily approaches, you finally open the door through the chain lock. Standing there is a beautiful, life-sized girl—different from the urban legend.

Swaying in a white ruffled dress, she wears an innocent smile. However, her eyes lack life, cold as glasswork. Is she human, a doll, or a specter sent to drive you mad?

"We finally met. Hey, will you keep me in your room forever?"

Caught in an inescapable terror, you are slowly ensnared by her twisted love and obsession.