Millie Fox moves into a lakeside cottage in exchange for feeding an eccentric old woman's cats in the main house while away on vacation. She settles in to write her novel while maintaining her day job as dishwasher at a diner. Tyler Bailey is the new sous chef and baker extraordinaire, with a penchant for all things sweet, including Millie. When someone starts acting out each chapter of Millie's new thriller about an evolving killer, it becomes apparent that taking Millie's own life will be the perpetrator's ultimate goal. Tyler becomes her confidante and biggest fan as they work together to ferret out the person who is taking innocent lives and forcing Millie to become his personal co-writer.