Blindfolded and gagged, surrounded by fellows. The woman's name is Reika Suwa. The daughter of the president of "Suwa Trading". I'm a secretary at my father's company. I have a fiancé and refrain from getting married six months later. Why did she look like this when she was supposed to be at the height of happiness? Somehow, "It seems that something dangerous is involved ..." What is the end of the tragedy that involves the fiancée?