曾參與過《危城》、《掃毒》編劇的譚惠貞首次執導已非常夠膽，引來劉嘉玲垂青，更身兼監製和女主角，與飾演其學生的新世代演員吳肇軒發展一段曖昧忘年戀，透過這段微妙師生關係，揭示都市人的兩種寂寞。在張子行的記憶裏，有著一個既陌生又熟悉的女子背影；在葉若美的生命裏，有著一個既熟悉又陌生的老公，一晚在泳池的相遇，二人踏入了對方的秘密世界，遊走在親情、愛情、友情的邊緣，以青春的名義。

In the footsteps of Mad World and Weeds on Fire, young filmmaker Tam Wai-ching is ready for her timein the spotlight with this entry in the Hong Kong government’s First Feature Film Initiative project. Hengis a high school student whose mother abandoned the family eight years ago. You Mei is a teacher whose husband is having an affair. When You Mei becomes the temporary teacher at Heng's school, the two lonely souls develop an affectionate bond that may be love. This provocative story of young love is led by an alluring performance by Carina Lau, who also serves as a producer of the film.