To begin with, Three Skeletons Key starts off with the reason on why it got such a strange name. Then, the story goes to present time at the island when three men that are working at a lighthouse see a boat coming straight at the them. One of the men, Le Gleo, is supper confused on why the boat is going straight at them. He wonders if there is a crew aboard or if the crew is drunk, but then assumes it is the Flying Dutchman. Right when they think the boat is turning away, it turns around showing giant sea rats coming straight at them from the boat. These rats aren't just any ordinary rats, they are huge, hungry, and vicious rats. So, the three men run for their lives straight to the lighthouse. Finally, they get in safely and lock all the doors and windows, and to their shock the rats were surrounding the whole lighthouse.