However, his quest for vengeance takes a complicated turn when he learns that his daughter, Mi-do (played by Kang-ho Song), has fallen in love with his captor, Mido (also known as Lee Woo-jin, played by Ji Chang-wook). As Oh Dae-su navigates through his complicated emotions and the twisted relationship between his daughter and his enemy, he uncovers a deeper conspiracy that challenges everything he thought he knew about his past and his motivations.