When a sudden, violent storm sweeps through the valley, a young lamb named Pip is separated from his flock and cast into a world of darkness and fear . But the flock's aging, loyal protector, a wise Border Collie named Barney, refuses to give up. Ignoring his own weary body and the pleas of his owner, Barney sets out into the treacherous wilderness , following the fading scent of the lost lamb . It's a race against time, a journey of courage , and an unbreakable bond between a dog who has dedicated his life to his flock and a lost lamb who has everything to learn about survival . With predators lurking and a dangerous river blocking the way, will Barney's loyalty be enough to save them both?