The townsfolk of Eastport, Maine, know the best place to satisfy their sweet tooth is at Jacobia 'Jake' Tiptree and Ellie White's bakery, the Chocolate Moose. But some people living in the island town have more sinister appetites . . .

As the sun sets on summer in Eastport, local celebrations are in full swing—and Jake and Ellie have their hands full supplying the most decadent of desserts for Eastport High School's Class of '97 reunion. Unexpectedly, the gathering includes ex-spouses, Cindy Munson and Terry Lawson, seemingly reunited as a family with their precocious six-year-old daughter, Ivy. But when Cindy's body is discovered murdered in Lawson's car that night, suspicion immediately falls upon the tech-financier, who was once also Eastport High's most notorious school bully.

As the evidence stacks against him, Terry becomes the prime suspect, leaving young Ivy in the care of child services. Remembering her own experiences in foster care, Jake volunteers to look after the little girl while conducting her own investigation into the night of the dance with Ellie.

But someone doesn't want the amateur sleuths digging up past, humiliating secrets that may point to vengeful present-day motives—even if it means adding Jake and Ellie to a killer's body count . . .