After the tragic death of her beloved boyfriend, she , Hwang Miso, was forced to get into a relationship with her fathers best friend's son, Yang Jungwon. Will they ever be able to make the ideal relationship or.... even a relationship ?

- THE UNEXPECTED SERIES : BOOK I - Devastated by the sudden confession from her boyfriend, Park Edlyn decided to go to the rooftop to clear her mind. That is until she met Sim Jake, a handsome neurosurgeon who worked at her father's hospital. They both decided to get drunk and tell each other life stories. It was going so well until they both woke up sober in the same hotel room with marriage documents on the table. They realised they got married due to a drunken mistake but both of their families didn't want them to get an annulment because it would ruin their reputation. Can Edlyn and Jake live together without having the urge to kill each other?