This is a story about two girls riding the same subway, and under the arrangement of fate, they met, got to know each other, and fell in love by chance.
Mo Zijin was "saved" by Shang Hai on the subway. Unexpectedly, Mo Zijin fell in love with this unworldly woman at first sight, and then Mo Zijin began to pursue Shang Hai.
Shang Hai, a girl who had a crush on the girls in her dormitory in college, gave up her first love because of her cowardice and reason. At this time, when she was pursued by the beautiful Mo Zijin, she had already moved her heart. Will she choose to give up this time or fulfill her feelings and be her true self?