The NCIS team investigates the death of a Navy commander whose body suddenly explodes before Jimmy can examine it.
Geoff and Erica realize they are in different places in college; Beverly tries to find a new purpose in her life as she seeks political office as the city comptroller.
When Marjorie learns Jackie's ex-boyfriend is gay, she tries to fix Ronny up with him. Also, Sean gives Gerard a birthday gift that proves to be disappointing to everyone but Marjorie. Rick Fox guest stars.
