There is a notorious serial killer who only kills rich women called 'Rich Girl Killer.' The 4th victim was found last night, and in the morning next day, Ho-chul's daughter Soo-ah gets kidnapped. Then, the kidnapper calls Ho-chul. The caller doesn't ask for money bur orders him to kill the 'Rich Girl Killer' within 24 hours. Getting into this suspenseful situation, Ho-chul does all he can do to find his daughter.