This is very good! You've certainly captured the feel of the TOS era. Wesley's crew and the Klingons face a test from some superior beings (similar to the Organians or the creature from "The Savage Curtain") but the situation is still unique. I still can't tell whether this being is benevolent or not, but I think there is a real purpose to these tests, particularly the mysterious references to future events set in motion.
A great story with some fine character work and action!