The female protagonist Lin Xia drives night shifts for her family for seven years, working hard to earn money. However, when splitting the family assets, her biased parents only give her a broken tricycle, leaving the brand-new heavy truck to their son Lin Dong. With a cold heart, Lin Xia leaves home with a clean slate. Relying only on her meager savings and the help of a friend, she modifies and repairs the tricycle. Adhering to the rules of freight transport, she fears neither hardship nor danger. With her superior driving skills and credibility, she gradually establishes a foothold and expands her business step by step. Her younger brother Lin Dong relies on the new vehicle to act arrogantly and recklessly, ignoring safety rules; overloading and speeding ultimately lead to a severe traffic accident. Lin Xia sticks to her bottom line, risking danger in a critical moment to transport emergency rescue serum to save people, blazing her own trail in the freight business, where good and evil ultimately meet their respective ends.