"Kir'Shara," the ninth episode of Star Trek: Enterprise season four, concludes a pivotal three-part Vulcan arc by exposing a corrupt high command and establishing the foundation for modern Vulcan philosophy. The episode sees Captain Archer and T'Pau locate an ancient artifact that reveals a Romulan-backed conspiracy to provoke war with Andoria. Further details regarding the episode's plot summary can be found at IMDb .