In the 1990s, a railway worker accidentally saved a city girl, and the fate of the two people intersected from then on. She was betrayed by her ex-boyfriend and her biological mother's preferred boys over girls. Only the love and care of the worker and his son illuminated her life like a light. He was brave, kind, and responsible. He raised the son of his ex-girlfriend who had a heart disease, and took care of the city girl meticulously. After many hardships and twists and turns, the two of them finally got together, but at this time, something unexpected happened again. The generous death of a woman who liked him, and the return of his ex-girlfriend made their lives uneasy. In the end, they made a decision...