Awakening before a church stood in the middle of a meadow, Mutsuki follows a white cat inside and begins to explore. Their wristwatch reads 23:50, on the 15th of July 1927. After 600 seconds have passed, Mutsuki must defeat the monsters that appear and escape from this nightmare.

Awakening before a church stood in the middle of a meadow, Mutsuki follows a white cat inside and begins to explore. Their wristwatch reads 23:50, on the 15th of July 1927. After 600 seconds have passed, Mutsuki must defeat the monsters that appear and escape from this nightmare.