Paul is a writer who lives in an isolated house in the mountains. In recent times, his things are not going, the publisher rejects his last book, and he tries to forget about alcohol failures. Suddenly, the life of the hermit changes dramatically when a stranger encounters and helps him avoid a scandal in a roadside café. Paul offers to stay with him for the night. The stranger suddenly begins to care about the writer and offers a new story about his book. But who is he and what is the mysterious black butterfly tattoo on his body?