Alexandra has been playing tennis for as long as she can remember. After years of training under the instructions of her father, Julio (a retired tennis player who intends to relive his victories through his daughter), she has become one of the most promising junior tennis players in the Spanish circuit. During one of the most important tournaments of the 1978 season, the increasing pressure from her father will exert on and off the court will begin to affect her mental health. With the arrival of adolescence and the questions it brings, Alex will realize that, perhaps, this is not her destiny.

Boeun é uma colegial que tem uma queda pelo craque do time de beisebol da escola, Jungwoo. Porém, por causa de um pacto que seu avô fez com um amigo durante a Guerra da Coréia, ele ordena que ela se case com Sangmin. Apesar da oposição dos netos, eles são forçados a se casar. Ela finge que não tem marido e começa a namorar Jungwoo. Tudo corre bem até que Sangmin visita a escola de Boeun como monitor. Lá, uma professora chamada Kim flerta com Sangmin e mais tarde ela descobre que Sangmin e Boeun já são casados.

The start of the Yugoslav civil war forces freshly graduated Mina to choose between being an obedient daughter or escaping abroad with her lover so he wouldn't serve in the army.