Ang Lee once said: Everyone has a Brokeback Mountain in their heart.
When they first met Chen, Xia Yu fell in love with her, and Chen thought she liked men. Xia never expressed her feelings and just guarded Chen silently. It was not until the two went through a rough life for decades that Chen gradually realized that she also loved her. However, due to the rejection of same-sex people in today's society, they were unable to express their feelings to each other. They tacitly understood each other, and in the end they had no choice but to hide their inner feelings secretly. Time passes, and the years are like songs. In the blink of an eye, Xia and Chen have been apart and reunited for decades. In a major geological disaster, Xia and Chen meet again. Will she muster up the courage to confess to her this time? With their lives hanging by a thread, what choices will she and she make for each other?