Matsunaga Michiyo's husband, Hisao, has to go on a business trip to a factory in Borneo. Her husband's father, Denjiro, the company manager, has started to visit Michiyo frequently. Denjiro says he feels guilty for making Hisao go on that trip, but his eyes are fixed on Michiyo's beautiful, white body... Based on an original story by Henry Tsukamoto, this erotic story depicts how a beautiful daughter-in-law is seduced by the cunning tactics of her father-in-law.