Food delivery rider Li Chunsheng raises his hearing-impaired daughter alone. Learning that his daughter needs a 200,000-yuan cochlear implant, he only has 50,000 yuan in savings, but he never gives up. Along the way of delivering food, the father and daughter harvest the kindness of neighbors and strangers, and also pass warmth to everyone around them. Although life is difficult, he always believes that good deeds are rewarded with good. In the end, he tightly holds his daughter's hand and says, "Don't be afraid, Dad is here." Amidst the bustling mortal world, the warmest thing is the human heart.