When Zhou Shun's family divides the household, all they receive are a dilapidated old house, a barren hillside, and an ailing cow named Lao Huang. Just as they are preparing to sell the sick cow, Lao Huang kneels down, sheds tears, and desperately begs them to stay. Unable to bear abandoning her, Zhou Shun decides to keep her. Soon, they discover that Lao Huang is pregnant and possesses a remarkable ability to improve barren land. Relying on her, the family begins farming the hillside to make ends meet. Just as their lives start to improve, greedy relatives begin scheming against them and trying every possible way to seize the cow. While protecting their beloved cow and their little family, they unexpectedly become entangled in an old case and help a veterinarian clear his name after years of injustice. Despite their poverty, they hold on to their principles and fight to protect the happiness they have earned.