20 years ago, a famous actress mysteriously disappeared into thin air in the dressing room of studio No.7. This sudden incident was puzzling to everyone, and many strange things have happened since then. There were shooting equipment that malfunctioned for no reason, the tea cup that the actress used was found filled with hot water in the empty dressing room, and weird sounds came out of the dressing room in the middle of the night. In the end, studio No. 7 was sealed off, not to be used ever again.
20 years later, a famous director re-launched studio No.7 tofilm a horror TV series. On the midnight before the day of shooting begins, you suddenly remembered that there was a prop that had not been prepared. You returned to studio No.7, and a series of unexpected events gradually unfolded.....