Mara "Mouse" Montegomery has been best friends with Kai Bartley since she transferred into their second-grade classroom. Over the years, they became an inseparable duo, attached at the hip, where one went, the other would always follow. But, as the two went to separate colleges and grad schools, their friendship waned, along with any feelings that may or may not have developed along the way. 3 years ago, Mouse accepted a position as a professor at the University of Minnesota, Rochester, and that familiar stirring in her belly has returned with a vengeance. Kai has been working on a top-secret project for 2 years, causing their stress levels to skyrocket with no feasible way to bring them down. Mouse wants nothing more than to help Kai in any way that she can, her feelings for them be damned. But after one interrupted attempt at friends with benefits, they run into two problems: 1) that Mouse Montegomery's feelings for Kai are much deeper than she could have imagined and 2) that Amelia Shepherd has just gracefully and captivatingly waltzed into Kai's life, taking any hope at something more between the two best friends with her. What will happen when Mouse falls sick in a way that only Amelia can fix?