Engspice stood out as a particularly habit-forming variation of spice. This particular type of spice had the effect of modifying the user's brain functions, creating a situation where only the same kind of spice could fulfill their cravings. Furthermore, its cost was exceptionally high.
An individual involved in smuggler activities, known as Zeerid Korr, received the assignment of transporting spice through the Imperial blockade that was set up around Coruscant. Zeerid's superior, named Oren, communicated to him that a successful delivery of the highly sought-after engspice to Coruscant would result in the elimination of his debt to The Exchange.