ISBN-13: 9781535538787 / Angielski / Miękka / 2016 / 86 str.
Many years ago a band of people were walled up in an underground city. They are still thriving and using the modern world to help their community. None more so than Heather who is determinedd to use the Upworld to save her mother's life and give herself a future, though she is forbidden to go. Heather must travel to Upworld and brave modern day Edinburgh.