Ella's father was in a car accident and needed a large sum of money for surgery. David Anthony - a young billionaire helped her pay for surgery on the condition that she become his wife within three years.

Detailed outline: During those three years, the two pretended to be intimate but actually slept in two different places. It all started when Maria - David's childhood friend - returned from abroad to study. Her wish is to be David's wife. Hearing that David was married, she almost went crazy, trying to harm Ella.