Retired school principal Pak Tsin-ngam returns to Hong Kong from Canada to look for sopranos whose voices keep resonating in his head.

Retired school principal Pak Tsin-ngam (Chung King Fai) has somehow returned to Hong Kong from Canada. He goes to the familiar location of Lower Ngau Tau Kok Estate, which has been redeveloped, to look for certain sopranos whose voices keep resonating in his head. Pak Suet-yee (Jacqueline Wong), his granddaughter and reclusive illustrator, promises him she is going to find those alumni who were members of St John Primary School Choir more than forty years ago. Luk Kui-nam (Nam) (Owen Cheung), detective agency employee and Suet-yee's buddy-cum-fake husband, offers his help to divorcee Suet-yee. Alumni Tai Chin-leong (Forte)(Hugo Ng) and Kam Ching-yee (Mimi Kung) and her husband are also willing to help. They eventually manage to find other members, namely, Chan Lee-cheung (Wong Ho) (Ram Chiang), Yau Chi-hung (Wanderer) (Joe Cheng), Shiu Wai-chiu (Chiu) (Sam Tsang), Yau Tak-kwong (Brother Blue) (Willie Wai), Luk Tung (Au Siu Wai) and Ng Kwok-leung (Dark) (Tsang Wai Kuen). They also complete the original lineup by finding music teacher Lui Choi-kam (Lo Koon Lan). It is a choir reunion. However, challenging life experiences have transformed the guys into pathetic middle-aged men. During the search for the sopranos, subtle changes occur in Suet-yee and Kui-nam's relationship. The old guys are eventually revitalized. They are going to be in the spotlight by taking center stage again.