Krystal is a normal college student. One day, she meets a car accident but a devil accidentally saves her from the death; it's a very serious mistake and if the devil's superior or the angels find out, they will give him a punishment. The devil has no other choice but to summon her soul right away but Krystal yells out for the angels. If she yells out that loud, the angels may hear them and then everything's over. Devil begs her to kee