Actually, Mrs. Maier, who lives with her cat in a small house by Lake Chiemsee, is not easily disturbed. However, for some time now, she has been plagued by a certain restlessness. It's a good thing her new job at a stylish spa hotel distracts her. But then strange things begin to happen in the hotel and in her neighborhood. Mrs. Maier wants to get to the bottom of these events and discovers the body of a young woman in an empty house. But the perpetrator is still in the house.