You must travel across the island in your own yellow train—your only source of protection—upgrading its speed, armor, and weaponry to prepare for a final battle to destroy Charles. The Origin of the Demon Train

Charles is a massive, red, spider-like train with a human-like face and jagged teeth. He moves quickly on arachnid legs attached to a train chassis, stalking the island’s residents and railway tracks.

After obtaining three cursed eggs and upgrading your train to its maximum capacity, you lure Charles into a trap at a designated mine.

Charles was not originally a machine, but a giant, biological spider-creature living under the island. He adopted a train shell for protection when miners began attacking him. The Final Showdown

Warren intended to study and reproduce Charles to create an army of demonic spider-trains, ultimately seeking to take over the world.

You play as an unnamed "Archivist" and monster hunter summoned to a remote island by a man named Eugene, who is trying to survive the terror of Charles.