1989年的5月,一起溶尸奇案轰动香江。美丽的空中小姐Brenda(贺恩 饰)被人杀害,并投入强酸池中溶蚀分解。不久,其前男友汪德明(吴镇宇 饰)及其现任同居女友Kitty阮(梁思敏 饰)作为嫌疑犯被警方拘捕。
一年后,备受感情困扰的社工Shirley(叶童 饰)出入女子监狱对Kitty进行心理辅导。此时Kitty的情绪极不稳定,为了汪德明先后两次自杀。为了帮她重振生活的信心,Shirley来到赤柱监狱探访汪德明。几次见面后,汪开始向其袒露心迹以及和Kitty交往的经过,Shirley也向汪倾诉了自己的情事。拥有情感创伤的两人对彼此渐生依赖,而Shirley也开始为汪德明的清白奔走呼告……。即將改建的老房舍裡,住著兩兄弟和他們的父親。父親總是嚴厲、難以親近,而弟弟盡責地擔任哥哥的跟屁蟲,他知道無論發生什麼事,哥哥永遠和他站在同一邊。一天又一天,生活如此安靜,彷彿永遠不變,卻在某個夏日午後,時間悄悄帶來屬於成長,幽微而神祕的片刻。。Two young people with a young child, living in the seventies, are full of ideas and dreams. They are madly in love with each other, but a disastrous accident during a sailing trip over the ocean, drifts them apart. Thirty-five years later, they meet again and there is still love, but also other strong emotions to cope with. Does she dare to entrust him a big secret from the pas...。