When Peter makes it through a bad flu season without getting sick, the hospital asks him to volunteer as a nurse, but he finds himself at a crossroads when his mortal enemy, The Giant Chicken, is admitted to the ER. Meanwhile, Brian receives his genetic test results and learns he is part cat, causing him to have an identity crisis.
While NCIS must track down an organized crime leader who is trying to buy stolen defense technology, Callen goes to Anna to ask the ultimate question. Also, Deeks is kicked out of NCIS training only to find that Hetty has a life-changing surprise for him.
When a Navy therapist with a high level of security clearance is murdered, Pride and the team discover that she was working around the system to get justice for victims of sexual assault. Carter's mother confronts him when he refuses to talk to the FBI for a background check on her behalf. Sebastian starts to form a bond with a key witness who was hit hard by the COVID-19 pandemic.