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.
Following a sudden ambush in the jungles of Ontotho, Young Padawan Cere Junda is left to find her own way on a hostile planet. But local freedom fighters are happy to take Cere Junda in – if she will fight by their side!