Kirk and a landing party are stranded on a planet due to a disease that causes any adult to die a painful death, and must deal with the local children…

The Enterprise picks up a intergalactic conman, Harry Mudd, and three incredibly beautiful women who harbor a dark secret.

A transporter malfunction causes Captain Kirk to split into his “good” and “evil” selves, and a landing party will freeze to death if they don’t merge the two back together.