雲樓遠從港澳來台求學,寄宿在舊識楊老伯家中,卻始終未見到楊家的愛女涵妮。某夜悠揚琴聲揭開了涵妮長期隱居的秘密,她因宿疾只能靜養,但每晚都為雲樓彈琴。兩人因音樂相知,情感逐漸深厚。然而,家中長輩極力反對這段感情,暗潮洶湧。就在阻撓與暗藏的危機中,一段意想不到的姻緣悄然萌芽,即將改變兩人的命運。
導演李行身為將瓊瑤小說搬上大銀幕的第一人,再以《彩雲飛》推動第二波瓊瑤電影風潮,更是第金馬獎終身成就獎得主甄珍的代表作之一。本片同名插曲由鄧麗君、尤雅幕後主唱,並在歌詞更動後改名為〈我怎能離開你〉,成為鄧麗君的代表作之一,自此奠定其歌壇巨星地位。
Arriving in Taipei from Hong Kong, student Yun-Lau stays with his parents' friends and falls in love with their daughter, Hai-Ni. Fragile due to chronic health issues, Hai-Ni must avoid stress, but their love soon becomes a heartbreaking challenge.