Deep in Autumn Alley, antique book restorer Su Qingyuan struggles to keep her grandfather's old bookshop afloat amid financial troubles. Chen Yu, an architect specializing in the restoration of historic buildings, meets her through a renovation project. Neither sets out to fall in love; instead, as they work together, they gradually develop an understanding. Together, they tackle the practical challenges of restoring old buildings and saving the bookshop. With honesty and mutual support, they transform the old shop into a thriving new space blending antique book restoration with historic architecture. Pages reflect tiled roofs, and a craftsman's devotion finds its kindred spirit. In the daily rhythms of the old alley, they turn companionship into the warmest part of life.