Saera Kim is a 16 year old girl who lost her father in a plane-crash.

Her father was the manager of the famous 'Kim Airlines Company' who was tricked out of it by a deceitful business partner.

She studied in New York but had to move to Korea due to her father's death.

Her mother then started a Coffee shop-Kona Beans for their livelihood. 

Saera soon joined the most prestigious school of Korea -Neulparan High. 

She has an older brother - Kim Heechul who studies at the same school as hers.

There was someone who got into her nerves all the time.

Their class room , school or where ever they met became their Battle field.

Will there be an end to all these?

Will they turn out to be friends?

Or

Will they still continue bullying eachother?