It's Christmas in Sinful and Fortune is set to participate in all the local hoopla. A Christmas gala, caroling, and a sleigh ride are on the agenda. Murder is not. But when someone bumps off Santa, Fortune is aware a killer is lurking among the holiday cheer. But with no client and no reason to interfere with a police investigation, it looks as if Fortune, Ida Belle, and Gertie will have to sit this one out.

Big and Little Hebert might be criminals, but they prefer no competition in their territory, especially someone brazen enough to kill a man at the Christmas gala. When they hire Fortune to investigate the man's death, she gets her Christmas wish and Swamp Team 3 sets out to solve their final case of the year.