The tight embrace of death

When Valeria received an offer to look after the plants for a reasonable fee while the owners of the house were on holiday, she couldn't be happier. The cottage is located in the same village where her uncle had recently taken a job as a watchman. The windows of the house overlooked the fence of the estate he was guarding. She thought it was a good sign, especially as their small family was suffering from poverty.
However, the uncle's partner turns out to be a strange kid who opens doors to someone invisible at night, and the uncle sees a black woman who strangles him in his sleep. Lera's situation is even worse... every night at exactly 10 o'clock mysterious people in masks and black clothes come to her fence. Intuition suggests that their goals are by no means peaceful.....