Trinidad Jones is starting the festive season with sugary confections and a heaping scoop of worry as her shake shop enters its first Oregon winter. With snow abound and tourists trickling through, she'll do anything to keep her milkshake dreams afloat, even if it means catering a holiday steamboat party for some new arrivals in town. But when her good-for-nothing ex crashes through her shop's door claiming he's being charged with murder, things go sideways. With clues piling up like whipped cream on a sundae and motives abound, Trinidad and her fellow ex-wives must solve this murder before she's finally thrown for a scoop.