Hidden in Jinbocho, Tokyo is a booklover's paradise. On a quiet corner in an old wooden building lies a shop filled with hundreds of second-hand books. Twenty-five-year-old Takano has never liked reading, although the Morisaki bookshop has been in her family for three generations. It is the pride and joy of her uncle Ojisan, who has devoted his life to the bookshop since his wife Momoki left him five years earlier. When Takano's boyfriend reveals he's marrying someone else, she reluctantly accepts her eccentric uncle's offer to live rent-free in the tiny room above the shop. Hoping to nurse her broken heart in peace, Takano is surprised to encounter new worlds within the stacks of books lining the Morisaki bookshop. As summer fades to autumn, Ojisan and Takano discover they have more in common than they first thought.