The Two Sisters - Season 1 Episode 71
Overview: Hye Ji visits Yong Ki at Hye Won's place and finds out Yi Chul gave up the parental rights to Hye Won. Now that Hye Ji has the key to the safety box at the bank in the Bahamas, she plans to kidnap Yong Ki and run away with Yi Chul's fortunes to restructure Yong Ki's memories.