On the eve of Dr. Bashir's departure for a conference on the Romulan homeworld, he's visited by Sloan, the director of Section Thirty-one, a secret and unsanctioned extremist entity within Starfleet Intelligence. Sloan asks a reluctant Bashir to gather information on the Romulan leadership. Bashir reports the request to Sisko, who worries that although Starfleet Command has officially condemned Section Thirty-one, someone in its membership may actually be protecting the group. After consulting with Admiral Ross, Sisko advises Bashir to play along with Sloan in order to determine Sloan's motivations.