Star Trek: Asterisk "The Slaver Weapon"

Vital Information
Series: The Animated Series
Episode: S01E14
Air Date: December 8, 1973
Written by: Larry Niven
Directed by: Hal Sutherland

Spock and the gang try to keep an ancient, powerful weapon away from a race of stupid space cats.

The Slavers were a powerful race that existed eons ago. They left behind stasis boxes filled with technology that has helped space-faring species through the years. The first one was found by accident. But they found that once they had one, they were able to use it to find others. While taking a stasis box to a starbase, it picks up another one nearby. They take a detour to an ice planet and are immediately attacked by space cats.

Turns out, the space cats had an empty stasis box that they stole from a museum and used it to lure another stasis box that would be full of something. So, they lock everyone up and steal their stasis box. Inside it, they find a weapon of some kind with several different settings. Most of the settings do stupid stuff like propel one of the space cats with a rocket or turn into a hanger or something. I dunno. The point is the space cats can't figure it out. But Sulu and Spock end up getting their hands on it and discover exactly how powerful it is. They shoot it into the distance and this happens:
At least two penguin villages were decimated.
Now that they know exactly how powerful it is, they set it so that the space cats can't activate it. When the space cats finally get a hold of it one last time, they try to activate it, but instead set it to self destruct. It ends up blowing them up along with their ship and the Enterprise crew gets away Scott free. Because Scotty stayed behind on the ship.

Oh, and I guess the moral of the story is that really powerful weapons aren't good for anyone to have.

Overall Thoughts
This would actually be a really interesting story if they just had a better format for it. A movie would be awesome, but it would also work as a live-action TV episode. It just didn't work with awkward animation.