A futon laid on top of the damp tatami mats, drops of water dripping from the faucet into the aluminum sink... Raw, lewd sounds of "thump, thump" and "moan, thump" can be heard from the closed four-and-a-half-tatami room... Hidden from her husband, the lewd Nozomi is engaged in an affair with a man living nearby. She would wait for an opportunity when her husband was away to passionately pursue the other man's body. But one day, the man witnessed Nozomi entering the house with a young man other than himself. It was an autumn evening when the sound of cicadas was still ringing...