Boden and Jimmy find themselves at odds in dealing with the aftermath of recent events while Kidd is forced to deal with her unstable and volatile ex, Grant. With the help of firehouse 51, Dawson tries to put her best foot forward in her pursuit for fostering Louie. At the urging of Susan Weller, his new political consultant, Casey tends to his Alderman duties and leaves town with her to attend a three-day summit. Much to his surprise, Casey embraces his new role while Susan urges him to consider grander aspirations. Meanwhile, the house responds to a dangerous structure fire that puts one of their own in a desperate situation.