Student Jane jobs as an assistant for the animal researcher Phillip in a lonesome old house. They live alone except for the chimpanzees and butler li<x>nk a 45 years old very intelligent orangutan. Phillip wants to put li<x>nk to death. However before he can do this he's vanished tracelessly one morning. li<x>nk starts behaving more and more aggressive and prohibits Jane from using the phone or reaching the next village. When she punishes him by locking him out, he becomes violent.
