My Uncle the King

When three contingencies took off from their dying planet, Plantas, only two arrived at their destination unharmed. When the lost contingency is hit with a meteor storm, only one ship survives and makes it to their destination of Nalo. Over the generations, the descendants of the original refugees become the ruling class of their adopted planet. Even the rebel group, the Pure Of Nalo, are unable to unseat the monarchy.
When relations with Earth are established, it is Prince Nicos who leaves Nalo to find love on an alien planet and bring back new ideas as well as his Earthly family to save the throne and the people of Nalo.