On the day of Nic's baby shower, Billie takes full control to make sure it goes smoothly, but a secret she's been hiding changes everything. Devon and Leela stumble upon an apartment fire, where they assist in getting victims safely to Chastain and Leela gets a chance to prove her skills to Raptor. Meanwhile, Jake and his husband deal with the complications of Sammie's health, as they prepare to become more permanent fixtures in her life, and both Raptor and Rose receive exciting news.