What the Horn Wrought

When Pruniprismia has a daughter, Dr. Cornelius mistakenly thinks all is well. But a few weeks later, he blows the horn while running for his life. But with the Pevensies separated for school, they are spread throughout an unfamiliar Narnia. And with Caspian still the next in line for Telmarine throne, will they see him as an ally or threat? Prince Caspian AU