The USS Enterprise NCC-1701, under the command of Captain James T. Kirk, went to planet Delta Omicron III. The Romulans had agents down on the planet. Captain Kirk beamed down and was captured by Romulan agents on the planet. Mr. Spock devised a plan to rescue Captain Kirk. He put the plan into action and Kirk was freed. One Federation security officer and ten Romulans were killed in the rescue! With Captain Kirk rescued, the Enterprise then continued on her mission.