Thinking of her husband, her heart aching, she resolves to commit her first betrayal. Six years into marriage, she is a proactive housewife who enjoys traveling alone. She married through a workplace romance and deeply respects her husband as her lifelong partner. They have no children, but their relationship is excellent, with no history of infidelity. In the midst of this happy everyday life, why? "The reason... is curiosity." Her first lie, her first betrayal. This decision stems from her love for her husband and a personal challenge. As she is held by a man she's just met, her heart begins to waver.