Now be happy, we will protect you!!!

Mingyu and Yeoju are twins. One day, Yeoju goes down to her parents' house for a vacation. Then, a few days later, on Yeoju's birthday, an incident occurs in the early morning and Mingyu has to go to work. At home, only Yeoju is left because her parents and older brother are on a trip. One morning, someone comes into the house and stabs and beats Yeoju while she is sleeping. It was a vacation, but because it was Yeoju's birthday, the members came over early in the morning and found the door open