The heroine of the story was born in an ordinary family, and the hero lived in a prominent family since childhood. The male protagonist fell in love in the cram school for the college entrance examination. The two tasted the forbidden fruit. Later, the female protagonist became pregnant unexpectedly and gave birth to a son. The young couple decided to get married, but the male protagonist’s family strongly opposed it. The son married a well-matched wife, and the two decided to cut it off first, and then secretly obtained the marriage certificate. Seeing that the matter was a foregone conclusion, the hero's family had no choice but to stamp the marriage registration document in order to protect the family's face. Since then, the protagonist has moved into a wealthy family. Whether this young girl brought from the impoverished triangle in Seoul can survive in this big family? The young lady of this family status gradually integrated into family life..