(Once again, the panties are hanging on the balcony. It’s our signal to meet.) Rei, a newlywed, feels suffocated in her conservative marriage, her sexual desires left unfulfilled. One day, Nakata, a middle-aged bachelor, moves in next door. Their encounter becomes the catalyst for Rei’s suppressed desires to slowly unravel. She begins sending signals by hanging her lingerie on the balcony when her husband isn’t around, and the two start a secret affair. Under the guise of fixing the air conditioner, Nakata is invited into her home, and their encounters grow bolder with each passing day.