The whole story is based on the international bestseller "Nothing Holds Back the Night" (Colibri, 2013), a novel about the charming and mentally unstable mother of the author, who committed suicide. After the presentation of author's new book, embarrassed by her great success, the author gets acquainted with a beautiful and elegant woman named L. They both become friends, while gradually L. transforms into a demonic figure and obsesses the life and soul of the writer, trying to look like her, to work instead of her, to dress like her, to use her left hand like her ... After a small incident they both find themselves locked up in a provincial house where the monstrous nature of L. is revealed. Or maybe not? Or maybe not exactly? And how is it actually?