In the summer of 2044, as the “Drone Medicine Delivery Project” was set to launch in the remote mountain villages of Northwest China, the lonely Mr. Ma detained a drone, compelling Doctor Li – on the verge of moving to the city – to make one last visit. On this final mission, Doctor Li delivers medicine to isolated patients. Mr. Ma, in turn, offers him a cup of hot tea. In the quiet of their shared prayer, they silently understand each other’s concerns and bid a final farewell.