Arunrada decides to blackmail Pathiharn, a man she just met, for 500,000 baht because her sister urgently needs money. In return, he proposes that she act as the mother of his son, whose real mother has been missing for five years. While pretending to be the boy's mother, Arunrada and Pathiharn begin developing romantic feelings for each other. However, his missing wife unexpectedly returns, complicating things.