Firefighters LUO Zhen Hong and veteran journalist LIN Wen Ting, both in their 40s, cohabit as a gay couple and find their home to be the most relaxing place despite their high risk jobs. However, their relationship is challenged when Wenting's job undergoe s a drastic change, and Zhenhong is hospitalized due to work related injuries. Standing at a turning point in life, their courage and choices will be witnessed by the rainbow.