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 rebels are reeling and on the run. Scattered. Scared. Hope is dead. Darth Vader tightens his grip, mercilessly hunting the scattered band down with his most dangerous servants. They will not escape him this time. But for Luke, Leia, Han and the rest of the Alliance, the fight against the evil Galactic Empire continues. The heroes will need to turn to allies both old and new if they hope to ever turn the tide and save the Rebellion in its darkest hour. COLLECTING: STAR WARS 56-61