The year is 1912. The place is Newfoundland, Canada. Maggie Wells, a 12-year-old girl living in a small fishing village, spends her days playing with her faithful companion; a black Newfoundland dog named Sirius. However, when Maggie learns about a new law prohibiting all non-sheepherding dogs, she must summon all her courage and determination to protect her canine friend. Will Maggie save her precious Sirius, or will Sirius be the one who finally saves the day?