Ainun found out that her biological father, Abah Mulya, was actually a spiritual teacher who taught heresy and distanced himself from the Qibla. Can Ainun guide them to the right path again?

「天生我才必有用」羅穎詩誤信師長的讒言，認定寫歌詞是她這輩子的使命，立志要當填詞人！好事多磨，儘管阿詩扭盡六壬、奇招百出，一邊增進填詞功力、一邊廣結善緣，仍未能成功入行，做不成填詞人，反淪為填詞L。「只要有恆心，鐵柱磨成針」，填詞L揹著夢想的包袱在填滿遺憾的道上狂奔！電影史上首部關於粵語歌詞的作品，由新世代填詞人兼金像獎…