In a beach town on the Baltic Sea in Romania, G, Sam, Kensi, and Deeks check out the neighborhood while Hetty chats with the head of the Comescu family, who describes a connection to G. The team shoot their way into a house and save Hetty.
When a bus explosion kills several innocent people, the team jumps into action. Scola tries to balance fatherhood with the job.
After a family tragedy, Paula, a forensic investigator, is wrongly admitted to a psychiatric hospital. There, her mind wanders through shadowy and dubious pathways, until reaching the brink of insanity, as she investigates the true motive behind her hospitalization that unravels a terrifying conspiracy.
女孩们又回到了第二个系列节目中，在北爱不稳定的和平进程的背景下，用他们所有的老把戏来引导父母、派对、爱情兴趣和学校。
