Kevin Hui plays wholeheartedly with the piano keyboard every day, however, he is never a leading character on the performing stage. In fact, he is a piano tuner, who has more than 10 years of tuning experience.
Kevin learned his tuning technique from his uncle–Master Hui Kwang-yin, the most top professional piano tuner within 30 years in Hong Kong. Standing beside Master Hui, Kevin was always a supporting character.
It was when Master Hui passed away early last year that Kevin had to handle the tuning jobs left by his uncle all by himself. Following the footprint of his uncle after all these years, will Kevin become another Master Hui?
每天Kevin(許建弘)都全心全意與鋼琴琴鍵打交道，為求能夠彈出美妙的音色，不容許絲毫失誤。不過，在表演的舞台上，他從不是主角，甚至在主角進場前，他便要退場。
他是一位鋼琴調音師。三十出頭，已有超過十年調音工作經驗，但同時他亦擁有音樂文學碩士學位，鋼琴造詣達演奏級。他選擇了對學歷要求不高，且收入不穩定的調音師作為終身職業，原是基於一份使命感。
Kevin師承他的伯父許君賢。許師傅是香港近二、三十年來首屈一指的鋼琴調音師，對調音的要求甚高，他甚至將調音比喻作一門藝術。過往，Kevin經常跟隨伯父四出工作，並從中偷師。站在如巨人般的伯父身旁，他只願當一個配角。
但自去年初，許師傅病逝，Kevin便要獨擔大旗。他要繼承的不只是伯父的事業，更是他對調音工作的熱誠，以及對藝術的追求。一年將去，究竟Kevin能否從昔日的配角蛻變成主角？
