Star Wars Droids: The Protocol Offensive

The Protocol Offensive was a one-shot of the Star Wars: Droids comic series.

Publisher's summary
Plotted by Star Wars novelist Brian Daley (Han Solo at Stars' End) and written by See-Threepio actor Anthony Daniels and Droids writer Ryder Windham, with painted illustrations by Tales of the Marvels artist Igor Kordey. It's See-Threepio and Artoo-Detoo saving the planet Tahlboor, in an adventure set years before Star Wars: A New Hope! This prestige-format one-shot has it all.