In a cold winter, a kitten was thrown into the return box of the library in Spencer, Iowa, and almost froze to death. The library members decided to adopt the kitten and named it Dewey. The name comes from the sentence "Do we read many books?" The full name is Dewey reading books. This considerate cat has lived in the Spencer Town Library for 19 years, which has brought countless fun to people around. It has been interviewed by countless media in its life, and many people admire it far away. It is a very unique library cat. On the coldest night that year, Dewey, the kitten, was only a few weeks old and was thrown into the return box of Spencer Library. Librarian Vicky Mellon is a single mother whose ex-husband is an alcoholic. She suffers from the bankruptcy of her farm and the pain of breast cancer, but she still lives a strong life. The next morning, she found Dewey the kitten.

After being rescued, Dewey, the kitten, barely propped up her limping legs and feet, rubbed every hand that touched her with gratitude and love, and won the hearts of everyone in Wikipedia and the library.

In the following nineteen years, Dewey the kitten moved and attracted the residents of this town with enthusiasm, warmth, humility and keen sixth sense (Dewey the kitten always knew who needed it most).

Dewey's cat fame spread from town to town, from country to country, and finally became famous all over the world.

Dewey the cat is no longer just a friend. It has become the pride of people and a small town gradually recovering from the biggest crisis in history.