A peaceful family life with her husband and father-in-law changed drastically after an incident one night. Ever since, every Tuesday—her day off—has been consumed from morning until late at night by her father-in-law's gentle yet forceful advances. Though she deeply loves her husband, she finds herself unable to resist her father-in-law's desires. His tenderness and dominance have gradually shaken her heart, and now she realizes her feelings have been completely captured by her father-in-law's affection.