Star Trek: The Original Series
The Excalbian Yarnek
Planet: Excalbia. Sentient rock creatures whose planet is normally a bed of molten lava and deadly to humans. The Excalbians are capable of shape-shifting, and use this ability to experiment on the social practices and belief systems of passing alien life-forms.
Join Starfleet's miracle workers for a wrenching journey through the new frontier.
Next stop: Babel!
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