Looking for Answers about Zondervan Flight of the Outcasts, Aedyn Chronicles Series #2?

It has been almost a year since Peter and Julia visited the land of Aedyn and now faced with the harsh reality of their father's remarriage and two horrible stepsiblings, they're beginning to wonder if it was all a dream. As they run away from home one evening, they fall into a half-frozen river and find themselves back in a deserted Aedyn, where a volcano is ready to erupt. They must find a way find and save the people and bring them back to Aedyn before time runs out.