The action of the novel takes place in the rich quarters of modern Paris. In a luxurious house under one roof live people separated by intellectual, mental and property abyss: a lone concierge who admires Tolstoy's novels, a teenage girl who is ready to die because of the indifference of loved ones, a rich Japanese man who finds no like-minded aristocrats. But sometimes miracles happen: after many years of hatred of the world and the silent triumphs of the lonely spirit, someone may appear who will consider the elegance of the prickly hedgehog, appreciate its unique style and gentle ironic soul. But is everyone ready for an incredible meeting that happens only once in a lifetime?