Mako ends up marrying her son who was introduced to her by her boss at work. - However, she is actually in love with her boss, Tetsuzo. - Mako, who is serious and cannot refuse, marries Tetsuzo without telling him her feelings and ends up in a relationship of ``father-in-law'' and ``wife''. - Mako can't forget her feelings for Tetsuzo, and her relationship with her husband doesn't go well, and they haven't had sex even once since they got married. - Meanwhile, Mako decides to live with her husband's family and learns the family's twisted secret...