9 End 2 Outs is about love of singles in their 30s. Hong Nan Hee (Park Soo Ae) is an ordinary worker at a publishing firm. She always falls in and out of love since she was young until she realizes that an old classmate and her best friend, Byun Hyung Tae (Lee Jung Jin), has always been there for her. He may seem to be a good catch in the eyes of many women but he's only a cowardly boy to her. The drama uses the baseball theme to compare to the fates and lives of the people in love.