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.
When he encounters a criminal from his past, Jedi Master Obi-Wan Kenobi strikes out, determined to fulfill a promise he made to himself as a young Jedi: to bring in this fugitive on his own! While on the trail, Obi-Wan earns a favor from a local smuggler, but her devotion to working for her own benefit may be more trouble for Obi-Wan than her help is actually worth!