The Miss Dumpy parade is back in all its glory on Secret Seal Isle, and with Rain in charge, the residents are getting more than they bargained for. When the festivities are temporarily delayed, Cookie discovers Rain's not the only one with junk in her trunk. A dead body is found in the classic automobile Rain commandeered for the inn's float. And when the corpse is identified as a man with ties to the DeMasi mob, it appears Cookie's past may have finally caught up with her. 
But Cookie's not the only one who is threatened by the murder investigation. The new deputy-sheriff, June Loon, arrests Rain and her friends for the crime. It's clear Secret Seal Isle is no longer a safe place for Cookie, but leaving the sleepy island town could also mean losing Dylan, the man she loves. With a mother in chains, a killer on the loose, and her heart on the line, Cookie must solve the case to save it all.