After suffering from a brain tumor, 38-year-old Su Man met Chen Mo, a poor college student who deliberately approached her grandma to save her while calmly arranging her death. A deal in which each gets what he wants quietly turns sour, calculation and sincerity intertwined, desire and restraint collide. Su Man was soberly immersed in the vitality of her teenage lover, but she retreated step by step due to age and illness; Chen Mo went from being ambitious to being completely defeated, but was still unable to overcome the high wall built by her reason. Two lonely souls warmed each other in the countdown of life, and finally fulfilled each other's future with a silent farewell - she was buried among the falling flowers in the south of the Yangtze River, and he watched deep in the sycamore trees all his life.
