This special World Book Day title is a short, exclusive adventure set within the magical universe of The Strangeworlds Travel Agency series. It follows protagonists Flick Hudson and the mysterious young owner, Jonathan Merrifield, who can travel between infinite worlds packed inside ordinary suitcases. This specific adventure focuses on a journey to the Floating Mountains, a surreal, high-altitude world threatened by a localized crisis. The short format provides a quick glimpse into the series' rich magic system and emphasizes Flick's growing skills in inter-dimensional travel and problem-solving, acting as a perfect, enticing introduction to the full series.