Mosaic, an urban sketcher suffering from ALS, reunites with Angelfish, a bank teller and old primary school classmate, at a school function. When his condition worsens, Mosaic asks Angelfish to fulfill his one last wish: to be his girlfriend for just one day. Over the course of the day, Angelfish’s appreciation of this city and life is reignited.
Mosaic, an urban sketcher who suffers from ALS, hopes capture as much of his city as possible before he succumbs to his disease. Angelfish, a bank teller living a hectic but ordinary life, returns to her primary school for a fundraising banquet, where she reunites with Mosaic. The two share a fun night, fondly recalling memories from their childhood.
As his condition worsens, Mosaic asks Angelfish to fulfill his one last wish: to be his girlfriend for just one day. Over the course of the day, Mosaic takes Angelfish on a trip through his world, showing her the Hong Kong art scene and giving her a new perspective on their city.