A commander in Naval intelligence dies during a shootout involving others with the Los Angeles PD after a traffic stop; Callen returns to duty after recovering from his gunshot wounds incurred at the end of the pilot episode; the Office of Special Projects (OSP) has moved into different quarters. Director Vance says that the case of Callen's shooting remains open. The gang in LA find out about the victim, his sister, her daughter (who's missing), and a long-time best friend, who enters the scene and the action. Both Nate (the staff shrink) and Hetty (the operations manager) make constructive contributions. The team start putting the pieces together. Sam and Callen attend a party with fireworks, then they pitch a deal to someone who's someone else; the surprises multiply, and the atmosphere becomes tense, but Sam and Callen work things out and return the missing daughter to her distraught mother. Hetty spreads a blanket over Callen while he sleeps.