Joe (Tom Hanks) and Catherine (Meg Ryan) are business competitors. Catherine runs a small bookstore left by her mother, which is warm and pleasant, has a history of 40 years, and is well-known to the neighbors. Joe is the owner of a large bookstore on the same street. With his own advantages, he adopted a strategy of low discounts and good service as soon as the store opened. Catherine was very repulsive to his invasion, and the two fought each other during the day. Unexpectedly, they became close friends in the virtual time of the Internet at night, and their night conversations without knowing each other's identities made their feelings heat up rapidly. Although they both have their own lovers, the affectionate interactions on the Internet made them decide to meet in person. However, at this time, Joe accidentally learned the true identity of this online confidant. From then on, he had a new understanding of Catherine and secretly pondered how to approach the beauty...