Lu Wanqiu's world was once a fortress of perfect order, until she met Ji Huaiyang, and all her plans became sweetly futile.
Ji Huaiyang's life was once a straight line, calm and undisturbed, until he ran into Lu Wanqiu, and all his principles began to crumble.
This is an adult love story, with no grand declarations, only a cup of warm tea on an autumn afternoon and a spontaneous handhold on a winter street. When the "sun" longing for warmth meets the "autumn" in need of healing, they discover that the deepest love means becoming each other's indispensable seasons.