Several months have passed since beautiful daughter-in-law Akari moved in with her widowed father-in-law Shigeru. She and her husband intensify their efforts to conceive, but nothing works. Tests at a fertility clinic reveal a problem with her husband's sperm. Then he leaves on a three-day business trip, putting Akari and Shigeru alone under one roof. Desperate for a baby, Akari suddenly reveals a dominant side and sneaks into the sleeping Shigeru's bedroom...