After the bones of a boy who disappeared in 1978 are found at a playground, Stabler, still visibly recovering from a recent gunshot wound, teams up with Vizcarrando to determine the boy's identity, which leads them to a cold case involving four missing Puerto Rican boys that were never found.
When bodies of two hired assassins are delivered to the NCIS team, Ziva & Tony go undercover assuming the victim's identities in order to find the person who hired the assassins for their mission. While working on the case, Ziva & Tony spend some quality time in a luxury hotel and the attraction between them arises. Gibbs discovers that his team is not the only one working on the case.
Dean and Sam arrive in a town checking up a report of a mysterious death, and stop at a realtor's open house barbecue. Sam meets the realtor's son Matt, who is fascinated with bugs. Soon the town is invaded by swarms of deadly bugs, and there may be no way out.
Caroline informs the remaining six contestants that the duos are gone from here on out. Now, they will all be competing against each other by themselves. Aside from this change in the game, one contestant will shock everyone with their new look. Meanwhile, two other contestants will end up having a fight between each other.
When Michael and Jan try to nail down a potential new client, Christian, by taking him out to Chili's, Michael surprises everyone with what - or who - he does. Meanwhile, back at the office, Jim finds a semi-autobiographical script that Michael has written called Threat Level: Midnight, and he, Pam, Kevin, and the rest of the Dunder-Mifflin workers have a great time acting it out. Later that night, Pam and Jim share their first unofficial date, complete with dinner (a sandwich), candlelight, and Dwight's pathetic fireworks display.