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.
There was no peace for the crew members of the Millennium Falcon between Star Wars and The Empire Strikes Back! Follow their adventures as they plunge head first into an underwater hunt that leads to a demonsquid, a treasonous and plotting Kraaken, the ferocious night beast, lost power gems, stranded Calamarians, and giant sea worms! Will the depths of the oceans spell defeat for the Rebels, or will they emerge victorious?