The Anti-Republic Liberation Front leader Hetton rediscovered a long-forgotten hyperspace route that led to the planet Tython. In 990 BBY, the Sith Lord Darth Zannah acquired a datacard from Hetton containing the information about the Dark Lord of the Sith Belia Darzu, including the location of her hidden fortress and a hyperspace route to Tython. In exchange, Zannah agreed to join forces with Hetton against her Master, Darth Bane. This was merely a ruse, however, resulting in Hetton's death during his later encounter with Bane. With the information collected by his apprentice, Bane embarked on a new mission to find the fortress of Belia Darzu, and with it, the secrets to creating a Sith holocron.