She, Lu Wangshu, gave birth to a baby son by chance and one night of lingering.
Then a love affair started inexplicably.
After the man learned about the child, he left resolutely, leaving only a check. She happened to catch him sleeping with another woman in his arms.
In three years, she was determined to forget that unforgettable first love, but she had no choice but to meet the man again at her biological sister's wedding...