Choo Choo Charles Revenge will take you to the island of Aranearum, where a terrible monster is rampant: a hybrid of a gigapider and a train named Charles. An archivist, a monster hunter, was once able to defeat a monster by driving it into a tunnel and caulking it with a special protective shield. But there was a failure and Charles managed to break free. He scours the island looking for victims, and you need to find him. Achivarius is on vacation, you have to fight without him, and you, unlike the monster hunter, will walk instead of riding trains. Search the island, find the monster and destroy it in Choo Choo Charles Revenge.