Honoka is a full-time housewife who also cares for her elderly father-in-law. One day, her husband is injured in an accident, leaving her responsible for taking care of both him and her father-in-law until he recovers. Thinking of her husband, Honoka dedicates herself wholeheartedly to his care, eventually even performing sexual relief for him. Witnessing this, her father-in-law mutters, "If only I were injured too..." and deliberately injures his own leg to create an excuse. As a result, he exposes his erect cock to Honoka and forcefully pushes her into a sexual relationship. Deprived of sex due to her husband's condition, Honoka reluctantly finds herself stirred by her father-in-law's persistent kissing and sensual touching. Despite overwhelming guilt, her body gradually craves the intense intimacy with him. This inner conflict and emotional turmoil deepen the story.