陆雅晴(吕秀菱 饰)遭到了一位名叫桑尔旋(秦汉 饰)的男子的尾随跟踪,原来,陆雅晴的样貌和桑尔旋的妹妹桑桑如出一辙,然而,桑桑因为被男友万皓然(钟镇涛 饰)抛弃而发疯自杀,桑尔旋希望陆雅晴能够假扮成桑桑,去见他年迈的奶奶。感动于桑尔旋的一片孝心,陆雅晴答应了他的请求。 之后,陆雅晴见到了传说中的“渣男”万皓然,然而,这个一心想要成为歌手的男人却并不是陆雅晴所设想的那样一无是处,发现了他的歌唱天赋的陆雅晴真心希望万皓然能够摆脱灰暗的过往,重新振作起来。随着时间的推移,陆雅晴和桑尔旋之间的距离越来越近起来。Girl miss Lu is followed by Mr Sang one day because Lu looks like Sang's younger sister who suicided because her boyfriend Wan discarded her. Sang asks Lu to disguise herself as his sister and visit his grandma. Lu finds Wan is not such a bad man when Lu meets him later. She finds that Wan has singing talent, so she wants to encourage him to come out of the shadows.