After her mother dies, five-year-old Lu Nian is left at the mercy of others, with only Leiting, the old search-and-rescue dog her father left behind, to depend on. During a desperate escape on a snowy night, she follows an old photograph left by her father, Lu Zheng, and finds his five former rescue teammates. From then on, she slowly grows up in a new family. Thanks to her extraordinary mechanical intuition, she also becomes entangled in her father's past, school life, and real-life rescue operations. Centered on a loyal dog protecting its master, an orphaned girl searching for a home, and five older men doting on her as she grows up, the story blends family bonds, mystery, coming-of-age drama, and the thrill of extraordinary mechanical talent.