Well, the 'Star Trek Voyager Caretaker novel' has a complex plot. The Caretaker device is a central element. It causes the Voyager to be stranded in the Delta Quadrant. The crew has to deal with the immediate aftermath, like figuring out what happened and how to survive. As they start exploring, they meet a wide range of alien races. Some offer help, while others pose threats. The crew also has internal dynamics to deal with, as they come from different backgrounds and specialties. Their journey is filled with scientific discoveries, moral dilemmas, and of course, the overarching goal of finding a way back to the Alpha Quadrant.
The plot generally revolves around the adventures of the Voyager crew. The Caretaker's actions set the Voyager on its journey far from home. They face various alien species, deal with resource shortages, and strive to find a way back to the Alpha Quadrant while exploring new regions of space.