女儿Karen廿载前失踪于英国乡下,母亲Aylwood自此心神恍忽。当Carstairs一家夏季乔迁到aylwood庄园,诡异之事令其疲惫不堪,Jan也开始怀疑他们与Karen的失踪有关。揭开村民黑暗的过往,Jan深入玄秘也离危险更近,而如今逃离林中观察者为时已晚。Mrs. Aylwood is a distraught mother since her daughter, Karen, vanished in the Welsh countryside 30 years ago. When the Carstairs family move into the Aylwood manor for the summer., strange occurrences begin to unnerve the family and Jan begins to suspect that they are linked to Karen's disappearance. As Jan unravels the dark past hidden by the townspeople, she delves further into the mystery and deeper into danger, but now it might be too late to escape the Watcher in the Woods.