Alex, the main character of this book, has returned to Bilbao, the city where he used to spend his holidays. The return will place him face to face with the past, places, songs, friends... and a conflict that seemingly has no end. But above all, it will make him face Zubieta, a friend who is immersed underground since he helped escape from jail Joseba Sarrionandia, and who is considered by the police as one of the top leaders of ETA, one of Europe's most wanted terrorists. However, for Alex is an old friend. Zubieta asks for help to cross the peninsula and, despite his doubts, Alex feels a duty to lend a hand. So, for six hundred miles, fear, secrecy, the strength of political ideas and memories of the past mix with the reflection on the role literature and language have in a conflict, where the single choice of a word positions you on one of the sides: terrorism or armed revolutionary struggle?