A leisure bike ride through the town of Blackhill turns into a crisis when a Mystery Trackers detective realizes something is deeply wrong: residents have vanished behind closed doors, and shadow monsters patrol the streets in their place. The disturbance traces back to a local scientist who had been running secretive experiments. Reaching that house will be dangerous — but what the detective discovers inside may change the world entirely. A hidden-object puzzle adventure with a case that goes deeper than it first appears.