

Kang Do-hyun chooses an ordinary life as a taxi driver to avoid inheriting his father’s family business. One day, he happens to rescue Cha Eun-seol, who is fleeing a chase and has accidentally taken the wrong medication. After a one-night encounter, they part ways and return to their separate lives. Four years later, a stylish CEO shows up with a child and proposes marriage to Do-hyun. After registering their marriage, Eun-seol faces pressure from her parents to abandon the child, but Do-hyun appears and protects both mother and daughter. As her company falls into crisis, Eun-seol attends a family banquet of Taegang Group—the most powerful conglomerate in Country A—to secure a 10-billion-won investment, unaware that the chairman is actually her husband’s father. At the banquet, despite pressure from her former fiancé Gu Jung-tae, Do-hyun’s father protects his granddaughter Kang Rumi and makes his presence known, yet he can only approach her as a “grandfather” without revealing his true identity. As time passes, Do-hyun and Eun-seol grow closer. However, after failing to secure investment, Eun-seol risks both her company and her board position by making a dangerous bet with her father, Cha Myung-hwan. At this critical moment, Do-hyun seeks out his father, accepts the responsibility of becoming the heir, and begins to take action himself. In the end, at a press conference, the capital and influence Do-hyun has prepared turn the situation around. Eun-seol not only saves her company but also secures full ownership, achieving both love and success.

Six years ago, Lucia left Dorian to protect him from her ruthless uncle Javier. Framed by Javier, she was sent to prison — where she secretly gave birth to their daughter, Carla. Now, brave 6-year-old Carla tracks down billionaire Dorian, revealing the truth. A DNA test confirms he is her father — exposing Lucia’s sacrifice and wrongful conviction. Guilt-ridden, Dorian frees Lucia, crushes Javier, and fights to reclaim the love they lost.

Due to a string of misfortune, Summer was set up by her step sister which resulted in her getting pregnant. This was four years ago and when she returned home, she had twins and recognized the mask wearing Sean as the father of her children. However, little did she know that the man was also her boss