Princely daughter II

The second book of the story about the girl who has fallen into the world of magic and the green sun through a hole in the rock of a sail, which stands near Gelendzhik on the coast of the Black Sea.
Hrings grows above himself, like a magician and as a person. She signs a contract with the Privyan commercial concern for a period of several years and enters into a naval school for study.
There she meets fellow students, teachers and immodest, falls into bindings, in a word, life continues.
And somewhere in the world, still far from the pine bay, there is a war. The fleet of the islands fights with an enemy of lost lands, eager to restore the support for a while, the inter -world portal to the metropolis, the terrible empire of dark magicians. The world of green sun will no longer survive the second invasion.
Will the enemy break through to the scarlet citadel, which is stored by magicians of the lilac coast, or will young Hrings with friends stop them?