Because of her miserable childhood, she adopted a baby boy who was abandoned at the door of an orphanage. As a result, she broke up with her boyfriend who had been in love for many years. She became a single mother who gave birth to an unmarried child overnight. He left his hometown and came to a big city to work and work hard to make money, just to support himself and his children, no matter how high the company was. No matter how the upper class fights, no matter how life and death is between her ex-boyfriend and the real son of the boss, she only cares about her own little world, but her relationship with her ex-boyfriend is discovered, and she is involved in the grudges of the wealthy family. What's worse is that the life of her son, who she has worked hard to raise for many years, has come to light...