The USS Enterprise NCC-1701A visit a planet where the inhabitents need medical advice. Capt. James Tiberius Kirk, Spock and Dr. Leonard Bones McCoy visit a planet to give help to the few inhabitents on the planet. The inhabitents medical problems are resolved and the away team are able to leave but the inhabitents want McCoy to stay. The inhabitents put pressure on McCoy to stay but the away party refuse to let him stay.
The inhabitents dress the away team up as Ancient Greeks and force them to act against their will. Nurse Christine Chapel and Lt. Uhura are beamed down by the inhabitents and dressed in Greek clothing as well. Against his will, Kirk kisses Uhara. At the time, interracial kissing was unheard of and it was the first interracial kiss on television.
Kirk manages to obtain the powers that the inhabitents leader has and manages to override the powers of the leader. The away team are able to beam back to the Enterprise and leave.