Lady is a beloved pet who lives a comfortable life with her owners, Jim Dear and Darling. But her world changes when they have a baby, and she finds herself suddenly neglected and pushed aside. One day, she ventures out into the streets and meets Tramp, a stray dog who lives life on his own terms. Tramp is intrigued by Lady's naivety and tries to teach her how to be independent and carefree. They go on various adventures together, including a romantic spaghetti dinner by moonlight, which has become an iconic scene from the movie. Along the way, Lady and Tramp face various obstacles, like a group of troublesome cats and a vindictive dogcatcher, but ultimately, they develop a bond that transcends their different backgrounds. In the end, Lady proves her loyalty and bravery to her family and Tramp, and they all live happily ever after.