Although Jung Seo-Yeon suffers from her husband’s violence and has no will left of leaving her hopeless life, she fortuitously comes across 9.9 billion won ($9 million USD) and does whatever it takes to hold on to it. Kang Tae-Woo, a former detective whose only hope was his younger brother, meets Jung Seo-Yeon as he tries to uncover the truth behind his brother’s death. What story will unfold between a woman who strives to keep 9.9 million won and a man who ventures to solve his brother’s death by digging up the truth behind the 9.9 billion won?