The Windmill Massacre (2016)

Jennifer is an Australian girl who wants to retire from her past. On the travel to Amsterdam, she joins a tour to Holland's famous windmill by bus. When the bus is broken, she and other tourists must seek shelter in a disused windmill. The tragedy begins when Jennifer find out that members of the group start to disappear and soon she realizes that they share a secret. She must uncover the secret and find her way to survive.