Strange suicides have been reported in New York. Four girls from the same high school wake up one morning feeling exhausted and disoriented and unable to recall anything from the previous night. They learn at school that one of their classmates has committed suicide. School is canceled for the remainder of the day, but instead of returning home, the girls are pulled to a park by butterflies that only they can see. Suddenly, a man and a woman approach the girls and inform them that they all perished the night before.