Woo Joo-young (Seo Young-hee) is the eldest daughter in the family and have come through hardships in life thanks to her bright and caring personality.

Woo-bin romances the divorced single mom, but their differences in age, social status and life experience create obstacles to their relationship.

Jang Byung-doo (Lee Soon-jae) is the chaebol head of a resort group who falls in love with his caregiver Yoo Ji-sun (Cha Hwa-yeon), and they marry.)

Meanwhile, the chaebol's son Jang Woo-jin (Ryu Jin) is the cold and haughty planning manager at his father's resort, who has a strained relationship with his father marked by lingering resentment — he feels Dad showed little kindness to his mother, who died of a hereditary illness.

Woo Joo-mi (Kim So-eun) is a freelance reporter for a magazine who doesn't remember her own mother's face, having been raised by her older sister Joo-young and grandmother.