Returning agronomist Zhong Xin comes back to the mountain village, wanting to convert the idle old granary into a seed bank to protect endangered traditional seeds, but faces skepticism from old farmer Zhong Ye. Live streaming hits a cold spell and heavy rain damages seed materials, plunging everyone into difficulties. But the villagers do not give up; left-behind child Xiao Zhong, village streamer Zhong Que, handmade expert Zhong Shen, and other fellow villagers bring their own strengths into play—repairing the granary, making seed handicrafts, testing seed quality, and organizing the Seed Night Tour Festival. Everyone makes active use of waste timber and fabric, running seed classes and exchange experiences. The night tour festival explodes in popularity, the abandoned primary school transforms into a seed workshop, Xiao Zhong's parents return, realizing a rural cycle of old seed protection and handmade cultural tourism.