They were all sixteen male and female and while the night keeps deeper, some of their friends decided to go home because of strict parents. They were only four left at around 2 in the late morning. The owner is cousin of the celebrant so he allowed them stayed even the bar is already closed.
Strange things happened because of the influence of hard drinks so they are unaware of what they did. Scandalous act of the four involved was captured by a security camera installed.