20 years ago, the Nelson's have crushed in the rocks while they were sailing with a boat. The reason for that crush was actually the particular lighthouse. The lighthouse was not working at that time. Somehow it was left broken for a certain period of time and the result of that defect were the lives of those innocent people. From that moment, the spirits of the married couple are captured in the lighthouse. They have stayed there to signal the other boats that there are dangerous rocks around that place. Their mission is rather noble but even after 20 years, their spirits still can't settle down.