In the height of summer, a lonely man and three sisters settle into a country mansion.
The eldest is a calm housekeeper; the middle sister is an intelligent and reserved secretary at a foreign company; the youngest is a freedom-loving flight attendant.
With the owner's permission, the eldest invites her sisters to the mansion for Golden Week.
Although all three are happy to be reunited, the man's lustful desires soon begin to imperceptibly destroy their daily lives...
