The drama is about love of singles in their 30s. Hong Nan Hee is an ordinary worker at a publishing firm, she's a girl who always falls in and out of love since she was young until one day when she meets an old classmate, Byun Hyung Tae, who is a team leader of an advertising company again. Hyung Tae may seem to be a good catch in the eyes of many women but he's only a cowardly boy to Nan Hee whom he has grown up with. '9 End 2 Outs' is using the baseball theme to compare to the fates and lives of the people in love.