Sara, Airin, Rachel, and Amara were accidentally brought together because of the death of Alex, their ex-boyfriend. They also received a letter from Alex after Alex died, and one of Alex's killers was among them.
Overview：Sara, Airin, Rachel, and Amara were accidentally brought together because of the death of Alex, their ex-boyfriend. They also received a letter from Alex after Alex died, and one of Alex's killers was among them.
