With the help of Knight's dad, special agent Feng Zhao, NCIS works to unravel the mystery of a recently used service weapon belonging to a missing agent; McGee is in a tailspin when DNA results reveal a close relative he was unaware of.
Tropes:
- A Day in the Limelight: Jess and her father Feng Zhao.
- The Ace: Special Agent Feng Zhao is considered "the Gibbs of the Far East".
- Dating What Daddy Hates: Downplayed. While Feng doesn't hate Jimmy and acknowledges him as a good man with a wonderful daughter, he is concerned that Jess' relationship with Jimmy would distract her from her long-range career plans. It is only at the episode's end when he properly meets Jimmy who declares that he will always support Jess that Feng finally approves and accepts that Jimmy will be a part of Jess' life.
- Not What I Signed Up For: Doctor Mei Li of China's Bureau of Agriculture was forced by the Chinese government to weaponize her research on genetic virus manipulation. This leads her to reach out to NCIS Special Agents James Chen and Feng Zhao so she could defect and blow the whistle on her government.
- Parent-Child Team: Feng Zhao and his daughter Jessica Knight.
- "Well Done, Daughter" Girl: Jess
- What the Hell, Hero?: Feng gets the riot act from Leon and Jess for cutting communications with NCIS and going off-the-books in the U.S.
