The Castles in the Air series involves Malcolm Ellis, a quietude, repose, and enigmatic first-year student. He devotes himself to the saying that benefits come before work and irresponsibly and selfishly cares for himself alone. After five months after encountering a woman named Mia Daphne, he began to think back on their conversation about dreams and change before finally deciding to let it go. However, it wasn't long before those events' relevancy struck him. At the start of his second semester, Mia Daphne suddenly transfers to Malcolm's school triggering the rekindling of the lost feelings Malcolm had towards her.