Change One Letter of a Star Trek Episode Part Two

 "The Alternantine Factor"--Sulu discovers that his pet plant, Beauregard, has an unusual chemical compound that could, under certain circumstances, endanger the ship. Can Sulu find an alternative to alternatine--or will he have to part with his pet?

"Tomorrow is Jesterday"--The Enterprise visits the planet Harlequinade, a popular resort planet. But once every thousand years, the natives celebrate Jesterday--and the joke is on Kirk and his landing party...with a potentially deadly punchline.

"A Waste of Armageddon"--The crew of the Enterprise encounter two planets at war, and one world wipes out the other just as the Enterprise arrives. The genocidal victors celebrate--only to discover their now-extinct rivals held the ultimate salvation of their killers. "Now, gentlemen...in a choice bit of...TRAGIC...irony...you'll have to savour the taste of your wasted...Armageddon."

"Spice Seed"--The crew isn't exactly happy about being assigned to a milk run--in this case, shipping grain from one world to another. But this is no ordinary grain, and its strange seed will soon spice things up on the Enterprise . . .

"The Devil in the Park"--Sulu, Uhura, and Scotty visit a national park on Andoria. They're not prepared for certain Andorian traditions--including a ritual reenactment of the crimes of a notorious Andorian serial killer...

"Errand Ox Mercy"--On a planet that mimics the culture of the American Ancient West, Captain Kirk fights for the freedom of sapient oxen used as beasts of burden.

"She-City on the Edge of Forever"--The Enterprise encounters a world of sapient cities, including one that identifies as a cis woman--a controversial choice on this world of ancient tradition . . .

"Operation--Annihilato!"--In the lighthearted season one finale, Sulu concocts a special alien-influenced sundae for his friends. But the Annihilato contains so much sugary goodness that the ice cream party soon gets out of hand . . . 

"The Return of the Archies"--A long-forgotten teenage pop band from Earth's 20th century is discovered, alive and well, on a distant alien world. To make matters all the stranger, they seem to believe no time has passed, and carry on as though they were still in the swinging 60s in a small Earth town called Riverdale. What is the impossible secret behind the return of the Archies? (Yes, this one breaks the rules, but it was either this or "The Return of the Urchons.")