Gibbs, Torres and McGee look for a missing Navy SEAL who disappeared during an unsanctioned trip, in an area of Paraguay controlled by a group of violent rebels.
While investigating the murder of a young woman, Castle and Beckett find evidence that links her death with Senator William H Bracken, the man responsible for Beckett's mother's murder.
DEA agent Talia Del Campo seeks the team's help after her partner is murdered, but Kensi thinks there is more to the story.
Roxy sees a female soldier get taken away from her daughter in handcuffs and asks Claudia Joy to look into the matter; Jeremy is smitten with a nurse from his group therapy session.
Roxy struggles with moving away from her friends; Joan prepares for a hurricane; Denise and Frank celebrate Molly's first birthday.