-Danny gets a new partner, Detective Candace McElroy, aka Mac. She was previously in the 86th Airbourne and did three tours in Afghanistan.
-Danny and Mac investigate when Jimmy is thrown out of a moving vehicle with a rat in his pants. Jimmy refuses to cooperate.
-Sophia Fronza, aka the Goddess, a high powered fundraiser asks Erin to join one of her charities. When a bunch of rats end up running across the floor of a charily dinner, Sophia tells Erin it was due to a burst pipe. Erin later learns that Sophia lied and the rats were dumped deliberately.
-When someone called the Goddess ends up a part of Danny's case, they realize that Sophia is connected to corruption. Erin helps take her down.
-When a bigoted radio talk show host comes to town, Frank must protect. When the man assumes that Frank is as bigoted as he is, Frank shows up with a full detail of the very diverse NYPD.