Far away in the vast expanses of the Universe, the passengers and crew of the large interstellar liner "Ecliptic" disappeared without a trace, abducted by an insidious race of aliens. The brave Captain Donaldson and his international crew of the Star Knight rescue spaceship set off in search of them (including the search for their parents who found themselves on board the ill-fated liner). Donaldson and his friends have to overcome many difficulties and dangers! But the brave eight, and the boy Jacques they found on the Ecliptic, solve all the problems with honor! Which? You will learn about this by reading this novel.