Jess invites Nick and Angie to spend a couples’ weekend with her and Sam. Once there, however, she quickly discovers that two’s company and four’s a crowd. Meanwhile, Winston tries to teach Schmidt about race relations.
Christian becomes furious when Sean agrees with Grace, who is now the practice's in-house psychologist, regarding a woman's desire for extensive surgery in order to look beautiful for her high school reunion.
Team Scorpion heads to Mexico when a tech billionaire hires them to rescue his kidnapped daughter. Also, feelings are hurt after Walter gives an interview and fails to acknowledge the other members of the team.
Sharon's son, Ricky, comes home for a surprise visit while Major Crimes investigates what looks like the "follow home" murder of a retired LAPD fraud detective, who may have been murdered for an arrest she made decades ago.
It's the last day on patrol for Tang, as she prepares to move to another precinct as sergeant. But first she wants to tie up some loose ends on the beat. Lydia is pressured to make a decision about the extent of her police duties during the rest of her pregnancy. With Sammy recovering from injuries, Ben and Dewey are partnered together. But Ben is bent on tracking down the prostitute he's been trying to help and then getting her and her daughter away from the abusive pimp controlling their lives.
