Prime Directive

When the pre-warp civilization of Talin IV suffers a nuclear catastrophe that looks exactly like a Prime Directive violation, Kirk and his officers are court-martialed, stripped of rank, and scattered across the fleet — until they quietly reunite to prove the disaster wasn't their doing. What they uncover instead is a hidden hand that orchestrated Talin's self-destruction for its own purposes, forcing the crew to clear their names by exposing a threat far larger than one broken regulation.