Watch Secret Affair

Hye Won reaches a crossroads, forcing her to make a decision that will determine the course of her life for many years to come.

As her legal battle intensifies, Hye Won comes up with a plan to get some leverage and put her adversaries at a disadvantage.

Though Hye Won pretends that she and Joon Hyung are happily married, her struggle to maintain the illusion grows more and more difficult.

As Hye Won's legal problems escalate, she struggles to set her messy relationship with Sun Jae on a less complicated course.

While Joon-hyung pressures Hye-won to end her liaison with Sun-jae, the young pianist explores the possibility of studying abroad.

When Hye-won receives a disturbing text message from an anonymous source, she tries to put some distance between herself and Sun-jae.

Sun-jae delivers his most important performance. Meanwhile, Hye-won gets entangled in a mess when her boss is accused of illegal financial activity.

As intimacy steadily builds between Sun-jae and Hye-won, she's appointed as Sun-jae's official instructor.

After spotting Sun-jae having dinner with Da-mi at a restaurant, Hye-won has trouble controlling her emotions and punishes him for her jealousy.

As Hye-won and Sun-jae gravitate toward each other, Joon-hyung begins to sense what's growing between them -- and it doesn't sit well with him.

Hye-won does everything in her power to establish a professional relationship with Sun-jae, but she can't shake her feelings of attraction.

As Joon-hyung readies Sun-jae for his audition, Hye-won struggles with her feelings about the two men.

When Sun-jae gets thrown in jail for attempted assault, Da-mi seeks Hye-won's help to set him free.

To attend Seohan University as a piano major, Sun-jae works hard to prepare for the school's challenging entrance exam.

Hye Won, a woman who seems to have it all, auditions Sun Jae. His talent enthralls her, as does his passion -- a quality lacking in her own life.

A music professor seeking an apprentice sends a young prodigy to his wife for evaluation, unaware of the chord they are about to strike.