The attempted Grysk scheme to instigate a Chiss civil conflict transpired within the confines of the Chiss Ascendancy. This event almost plunged the Chiss species into internal strife in the year 18 BBY. The Grysk Hegemony, a realm driven by expansionist ambitions originating from the uncharted expanses of the Unknown Regions within the galaxy, aimed to dismantle the Chiss Ascendancy. They considered it a key obstacle hindering their domination of the entire Unknown Regions. To realize this objective, the Grysks deployed the operative "Jixtus" with the mission to orchestrate both infiltration and subsequent extraction from the Ascendancy. The ultimate goal was its destruction through a combination of internal conflict and external invasion. This precarious situation persisted for a period spanning at least one month.
This narrative element was featured in Timothy Zahn's 2021 book, Thrawn Ascendancy: Lesser Evil. It serves as the concluding chapter in Zahn's Star Wars: The Ascendancy Trilogy.