Tsubaki, a wife, invites her father-in-law, Shoji, over to live with her husband, Seiji. Shoji is usually a kind, but rather timid man, but he has the flaw of always causing trouble when he gets drunk. When Seiji goes on a business trip, his father-in-law and daughter-in-law are left alone. Shoji, who has had some alcohol in his system, mistakes Tsubaki for a bar hostess and starts touching her body. Tsubaki, who is not used to drinking alcohol and is dizzy, is raped by force...