The NCIS team investigate when a Petty Officer is found dead at an underground rave party after falling through the ceiling. During a search of the victim's room, the team soon find out that he was taking bribes and Gibbs believes that the victim's colleagues are involved but while forensic evidence is linking them to the scene, the group that confess that it was a prank gone wrong. However, Gibbs believes that one of the group is responsible for the Petty Officer's murder.