In a quaint English coal-mining town, John, a vibrant boy, discovers an adorable dog amidst a herd of sheep. Bringing the pup home, named Lassie, they forge a bond akin to siblings. Lassie's charm captivates the town, but their joy is short-lived when the coal mine shuts down due to depletion. Determined, John persuades the mine owner for a reevaluation, leading to a heartbreaking deal – Lassie taken to Scotland in return. With the help of Priscilla, John's friend and the owner's granddaughter, Lassie breaks free from captivity. The courageous dog embarks on a grueling odyssey from Scotland back to her beloved home.