Shy, quiet, and secretive, Tokuko is very slow to trust people. She has often been left alone by her parents, who own a lucrative corporation. Hoping to gain their attention, she would wear herself out trying to impress them. Tokuko's parents assigned her a piano tutor, Reiko-a sassy young woman who slowly coaxes her out of her shell. However, soon after the two of them were kidnapped for a ransom of 240 million yen in gold.