Gloria is an intense tale of people who are fiercely devoted to surviving their rough lives, focusing in particular on the life of a nightclub singer, Na Jin Jin, who braves the difficulties of her work to provide for her mentally handicapped older sister, Jin Joo. She finds an unwavering source of strength and support from her loyal childhood friend, Ha Dong Ah, a third-rate gangster with a big heart. Jin Jin also meets a potential love interest in Lee Kang Suk, the president of Double Sharp Entertainment, who has his own problems to face as the illegitimate son of an entrepreneur.
30歲的“熟女”珍珍一直和因為意外引致智商如同5歲小孩的姐姐珍珠共同生活，但她還在為了姐妹倆的生活而掙扎打拼。每一天都在打工中辛苦渡過。有一天，由於夜總會裏的歌手沒有準時到場表演，等得心焦的客戶們開始騷動並發出不滿之聲。珍珍是一個從上學起就從來不唱歌，曾經因為緊閉著嘴氣壞了班主任的女生；但為了救場，她站在了舞臺中央。最初站在臺上，珍珍緊張得無所適從、只能在那裏對著口形小聲低唱。正當臺下觀眾不滿時，珍珍鼓起勇氣做出了讓人始料不及的華麗“轉變”。只見她用不屈的聲音爆發出讓人感動的歌聲……
Aliases
