Behind the Wall plot
For several generations the Park family lived in a quiet hillside area, where Katelyn's grandfather and father were lighthouse keepers. At the age of 10, Katelyn's mother was severely beaten and left mortally wounded in the basement of the lighthouse. Her father Christopher was convicted of this crime and Katelyn was placed in foster care outside the village. Christopher was driven insane by the murder and placed in a mental institution, where he later died. Katelyn never had a chance to talk to her father after that terrible night. Twenty years later, she receives a mysterious letter that takes her back to the lighthouse. A place she swore she would never go again.