Friend-sleuths Arthur, Rose, Viola, and Luke have come to the capital for their holidays. They wanted to take a walk around the city and, at the same time, celebrate Rose’s fifteenth birthday. But their plans are unexpectedly interfered with… by a ghost.
The kids have clues—photos showing a pale, half-transparent silhouette racing through the Luna Park. The friends are at a loss: everyone knows that ghosts don’t exist, yet the photographs are real.
So they set out to investigate and find out: is it true that ghosts can exist, or is someone’s cruel prank hiding behind the “sighting”?