Episode 1
High school student Ha-won works hard at her jobs while being mistreated by her stepfamily. Impressed by her spirit, Hyun-min makes her an offer.
Episode 2
While posing as Hyun-min's fiancée, Ha-won encounters Ji-woon, who like Hyun-min is also a grandson of the Haneul Group chairman.
Episode 3
Ha-won comes to live with the chairman's three grandsons. Amid the odd circumstances, the chairman orders her to get everyone to dine together.
Episode 4
Yoon-sung tells Ha-won of the trauma the three grandsons have suffered. She presses on in her quest to bring them together.
Episode 5
Hye-ji recalls Ji-woon's promise to look after her, while Ha-won offers to help the chairman see his grandsons attend their fathers' memorial service.
Episode 6
The three cousins are moved by Ha-won and show up to pay their respects. Ha-won leaves the Haneul home and goes to stay with Hye-ji.
Episode 7
Hyun-min is humiliated after video of his confession spreads online. Ji-woon reveals the truth to Ha-won and brings her back home.
Episode 8
Ha-won is delighted at her success in bringing the boys on a trip together. Meanwhile, her stepmother searches for Ha-won's biological father.
Episode 9
Ha-won spies Yoon-sung heading into an organ transplantation center. Seo-woo's manager summons him to the office and shows him something.
Episode 10
Hye-ji's confession sends shock waves through both Ji-woon and Hyun-min. Ha-won hatches a plan to find out Ji-woon's true feelings.
Episode 11
The romantic tension heats up as Hye-ji comes to stay with the Haneul family. Ha-won works on drawing attention to herself.
Episode 12
Distraught by the appearance of a man claiming to be her father, Ha-won finds comfort in Ji-woon's arms. Seo-woo pours out his heart on the radio.
Episode 13
Ha-won faces a difficult choice when the chairman finds out about her and Ji-woon. Yoon-sung spies on the chairman's wife.
Episode 14
Blaming herself for the chairman's collapse, Ha-won disappears. Seo-woo and Hyun-min volunteer as potential liver donors.
Episode 15
Hwa-ja finally makes her power grab. The chairman's grandsons are united in their hope for his recovery, but the operation poses serious risk.
Episode 16
The transplant surgery is successful but Ji-woon remains unconscious. Hyun-min finds Ha-won and presents her with a pair of shoes.
