Lee Mina is an energetic and beautiful 10 year-old little girl. She lived in a modern beach house in Jeju Island with her attractive widowed father.

Lee Jonghyun, CEO of Lee Hotel & Resort in Jeju Island. He is a super attractive widower, the great entrepreneur and very wealthy. But, he never think about remarry after the death of his beloved wife.

Im Yoona, Lee Jonghyun’s deceased wife and also Mina’s mother. She passed away 9 years ago when Mina was only 10 months old. She is the love of Jonghyun’s life.

Gong Seungyeon, Yoona’s half sister. She is the mother figure for Mina. After Yonna’s death she is the one who raised Mina like her own daughter. She is a headmistress in one of International school in Jeju. She falls for Jonghyun but he never realized it.

There is a secret between them which can change their life forever.