Robert Olmstead is on his way from Newburyport to Arkham the cheapest way possible, which, unfortunately, for him, means taking the bus through shadowed Innsmouth.

Armed with only his notebook, he intends to study the local architecture and try and understand why this mysterious town is shunned so by its neighbours.

However, what starts out as an innocent diversion, quickly descends into darkness and, ultimately, a battle for his sanity and his life.