Duchess Satine travels from Mandalore to Coruscant on a diplomatic mission, with Obi-Wan Kenobi, Anakin Skywalker and a team of troopers to defend her. As her luxurious starship, Coronet, makes its way through hyperspace, the Jedi must stop several assassination attempts, and Anakin discovers that Obi-Wan and the Duchess have a history together.

On Coruscant, word reaches Duchess Satine that Death Watch is mobilizing, sparking a pre-emptive Republic invasion. On the run from Republic authorities, Satine and Obi-Wan set off to discover the group's true motives.

A peace conference between Separatists and Republic delegates is interrupted by Lux Bonteri, the son of a late Separatist Senator, who involves Ahsoka in his dangerous search to find justice for his mother's death.

Savage and Maul forge an alliance with Death Watch to target a common enemy: Obi-Wan Kenobi.

Backed by the criminal underworld, the Sith and Death Watch launch an attack on Mandalore.