One stormy night, a poor music student (Patrick Tse) meets a famous dancer (Josephine Siao). In one night, he composes for her the musical of her dreams: A Purple Stormy Night. The management of her dance company is divided on the musical, but the dancer manages to dispel all their doubts and the musical becomes a great success. The student and the dancer fall in love, but there is a shadow side to happiness: corrupted by success, the next musical they make is superficial. "Purple Night" shows t...