The Galactic Stewards and the Robot Dynak - Book four

In the Galactic Stewards and the Sphere the Starr siblings discovered their interstellar heritage, who their parents really are, that their mother and father are Galactic Stewards. As they left Earth to help a new friend from another planetary system they also hoped to find their mother and father. Though the Starr siblings did not find their parents, they did learn more about what might have befallen them. Unfortunately they also had to accept that the worst might have happened, and that their parents might never return. Almost a year later, however, a new hope appears with a faint signal from the edge of Earth's solar system. Tracing down that signal brings the discovery of their father's robot, alone, damaged beyond life, adrift in the dark coldness of space. This discovery launches them on a new adventure across the cosmos. This time, however, the siblings must split up: While Cal and Sierra take their father's Robot Dynak across the galaxy to Mindin, Bale and Montes are called to help a new friend somewhere else in the Galaxy. In this adventure they learn more about their family, more about themselves, more about their home planet Earth, and they learn what is happening to the Milky Way Galaxy that drew their parents away from them to begin with.