The 1973 novel was written by Kobo Abe and follows a nameless man who gives up his identity to live with a large cardboard box over his head, encountering a range of characters as he wanders the streets of Tokyo。
一封关系着民族兴亡的密函，风雨江山，英雄辈出；一次惊心动魄的盗密行动，烟雨浮生，恍然如梦。乱世风云，变幻无测，看乱世儿女救国危难之中。
