Oh, how the mighty have (or had) fallen. This final episode of the Original Series "stinks on ice," to quote the great Mel Brooks.
Captain Kirk's bod is hijacked by a beyond-jealous ex-female friend named Janice Lester. She couldn't hack it at the Academy - perhaps it had something to do with her being bat-shit insane - and blamed all men, particularly Kirk for her predicament. So with the help of some kooky alien tech she finds on some planet, she swaps out the old katra (or whatever) with Kirk, leaving her in Kirk's BVDs and the captain wearing her Victoria's Secret collection.
Kirk starts acting...VERY strange: he starts filing his nails, issuing confusing orders (the Enterprise is apparently going all over the galaxy, proving "female" captains can't drive) and trying to get on Ellen. Why he didn't just put on a drag show is beyond me.
There's no place else to go with this goofy story than with a trial (I wonder if David E. Kelley of L.A. Law and The Practice/Boston Legal fame ever watched this episode - perhaps he saw it as a dry run for Denny Crane).
It's all unintentionally funny and a sad, sad way to end a series, any series. Shatner hams it up so much I imagine the entire sound stage smelled of bacon. Anyone who has ever done a Shatner impression has likely seen this episode. In fact, Shatner, as Lester, gesticulates so much that you could probably watch it with the sound off and still get what's going on.
Star Trek is Copyright 2010 and a Registered Trademark of CBS Studios, Inc. No infringement of those rights is intended with this parody. Screencaps from Trekcore.com.