Deeks is kidnapped by an associate of Kirkin's who is in need of his help; NCIS investigates the shooting of a militarized dolphin equipped with a Russian microchip; Beale makes Nell an interesting offer.
Maura embraces her new journey, but nothing about life as a woman is easy; Sarah introduces her husband to her ex-girlfriend Tammy; Josh pays a visit to his ex-babysitter, Rita; Ali gets closer to her trainer.
Maura finally comes out to Ali, and they join Sarah on a field trip to the mall, where they all get rude lessons in womanhood; Josh is forced to confront his past, thanks to questions from Syd about his longtime relationship with Rita.