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.
Aphra's father has led her straight into danger – of course.
Her business on Yavin 4 concluded, Aphra journeys off…in search of one of the most powerful weapons imaginable!