When Gav and Jori Daragon were first captured by the evil Sith, they feared for their lives. Now, Jori fears for her brother's spirit, as would-be Dark Lord Naga Sadow begins to initiate him into the ways of the dark side of the Force. Naga Sadow is playing a deadly game of chess, and the Daragon siblings are his pawns.
5000 years before ANH. Note that this places this series chronologically before the rest of the Tales of the Jedi series, despite being the 5th volume according to date of publication. It also, therefore, has the distinction of being the earliest story yet told in the Star Wars universe's chronology.