Choi Chan-sook

A bullied girl becomes friends with a new kid during a break, but when classes start up again, their new friendship is nearly ruined when the bullying continues.

Yong-soon is an 18-year-old high school student. She falls in love with her gym teacher, but she thinks her teacher might have a girlfriend. Yong-Soon and her friends try to find out whether he does have a girlfriend, but they can't find any clues. Making things worse, her father brings a new stepmother from Mongolia.

Six months ago the son of the married couple drowned. The couple, together with the teenager that their son saved, begin a journey to cope with the loss.