The Bistro at Holiday Bay plays host to the Holiday Bay High School class of 2004 as they gather to celebrate their twentieth reunion. While every class seems to have its story to tell, this particular class is most famous for the murder of one of its most popular students shortly before graduation. The case was never solved, and the killer was never caught, but there is more than one alumnus who feels certain that the secret to finally bringing this cold case full circle is to take a hard look at a group of students who, on the surface, seem the least likely to have been involved in any sort of crime let alone murder.
Meanwhile, Shelby is trying very hard not to commit her own act of violence when the reunion coordinator turns out to be ten times worse than the worse bridezilla she's ever worked with. It seems that no matter how hard Shelby and her staff try to please this woman there seems to be no way to please her.