Faith is a 2012 South Korean fusion fantasy-historical-medical television series broadcast by SBS from August 13 to October 30, 2012 on Mondays and Tuesdays at 21:55 for 24 episodes. It is about a modern-day plastic surgeon who gets kidnapped and travels back in time to the Goryeo period, 700 years in the past. There, she meets and falls in love with a warrior who is the leader of the royal guard.

Dong Yi is a 2010 South Korean historical television drama series, starring Han Hyo-joo, Ji Jin-hee, Lee So-yeon and Bae Soo-bin. About the love story between King Sukjong and Choi Suk-bin, it aired on MBC from March 22 to October 12, 2010 on Mondays and Tuesdays at 21:55 for 60 episodes.

Dong Yi recorded solid viewership ratings in the mid-20% to 30% range, and Han won acting awards for her performance.

Two women working in the same industry with the exact same name keep getting their lives entangled both professionally and personally.