My own synopsis

This is during the winter, two teenage girls had an opportunity to be at home on their own as their family are away. They are excited about this as they are having a week without their family and trying to be independent. However, there is some strange noise every night and they didn't notice it. It is getting until the end of the week, and there are more strange things happening. They are scared and hoping that their family is coming back sooner. On the fifth day, the grandmother suggested they should all go back to take care of the two girls, and she seems like she knows something behind it. The girls realised that there is something wrong with the house then they asked their family about the story behind it. The grandmother told them that there was a child been abused and killed in this house and the ghost is returning for revenge. On the last day of that week, the ghost appeared and it was trying to kill everyone....