After Hee-jin's younger sister So-jin, who is possessed by a spirit,disappears,the neighbors die one by one and a secret underlying their deaths is revealed.
Jobless and single in her thirties, Hee-soo is miserable. On one fine day, she sets out to find Byoung-woon, her ex-boyfriend. It is not love that brings them together but $3,500 Hee-soo had lent to Byoung-woon a year ago. Byoung-woon is also penniless but surprisingly happy for he knows the girls who are willing to give him money. Afraid Byoung-woon may run off before clearing his debt, Hee-soo follows him as he visits many girls to borrow money, so the two ex-love birds set out on a one day journey to collect money, and memory.
Ju-eyon and Seong-tae have been best friends ever since they first met each other 10 years ago. But in one night their 10 year friendship comes crashing to the ground after they sleep together. The comfort and security of marriage is a siren call, and the two decide to forego their ideals to spend their first day as man and wife. However, their perfect lover soon appears right in front of them: A sexy editor appears to seduce Seong-tae and an advertising director appears to tempt Ju-yeon. With a single smile they turn the newlyweds dream into a nightmare. Even after only a few days, they soon find themselves faced with the worst choice of their lives as they struggle to reach happiness.
