Lilly is a rich girl who has just returned from America. She went to study there because her stepmother did not want her in Thailand. When she returns, her father Rarm gets her a bodyguard, San without knowing that San is his wife's son. San's mother had abandoned San and his sick sister Dao. San thought that Lilly is the daughter of his mother and Lilly's father. He hates her because he thinks that she is living in luxury while his sister is sick and they are barely making their ends meet. He wants revenge.