BBY/ABY is used to position items along the Star Wars Timeline. BBY refers to Before the Battle of Yavin. ABY refers to After the Battle of Yavin. The Battle of Yavin in Episode IV: A New Hope occured in 0 BBY/ABY.
The battle against the evil Empire rages on as heroic men, women, and aliens of the Rebel Alliance continue their struggle to end the era of darkness. But by rescuing an Imperial prisoner, have the Rebels brought disaster upon themselves? While on a perilous quest in the mushroom forest of Arzid, Luke and Ken are captured by Kadann, Supreme Imperial Prophet. Having tempted the young Jedi Prince into revealing the location of the Lost City of the Jedi, the Supreme Prophet plans to steal the ancient knowledge of the Jedi Knights. Now Kadann will rule over a new tyrannical empire, as foretold by the… Prophets of the Dark Side.