The Two Mistress is a story about two rich Heirs Jaejoong and Yoochun who had everything in life, they had beautiful wife, but the love was never there for them, living together for more than a year together and still have no feelings towards each other the Heiress decided to find girls for their husbands to sleep with. Yoona met a girl who was working two jobs just trying to make ends meet for her drunk mother who abuse her daily, the moment Yoona show her mother the money she give her daughter to the heiress without talking to her daughter. Taeyeon was out with her friends when she saw a girl who was working, she decided to leave her friends to go see this girl when her father came and ask for money, she got beat by her father when Taeyeon jump in and ask for his daughter. He give his daughter up to Taeyeon as she hand her father a big check. 

Jaejoong - Married to Taeyeon, No Love in their marriage.

I'll Make You Feel The Pain, If You Try To Cheat On Me.

Yoochun - Married to Yoona, Never loved each other. 

I Own You.

Yuri - Sold by her father.

I'm Not Afraid Of You.

Seohyun - Mother sold her to Yoona.

You May Have My Body, But Never My Heart.

Taeyeon/Yoona