Inspired as a boy by the multiple meanings to be found for a single word in the dictionary, Kohei Araki is devoted to the notion that a dictionary is a boat to carry us across the sea of words. But after thirty-seven years creating them at Gembu Books, it’s time for him to retire and find his replacement.

He discovers a kindred spirit in Mitsuya Majime—a young, disheveled square peg with a penchant for collecting antiquarian books and a background in linguistics—whom he swipes from his company’s sales department.

Led by his new mentor and joined by an energetic, if reluctant, new recruit and an elder linguistics scholar, Majime is tasked with a career-defining accomplishment: completing The Great Passage, a comprehensive 2,900-page tome of the Japanese language. On his journey, Majime discovers friendship, romance, and an incredible dedication to his work, inspired by the bond that connects us all: words.