Returning hometown lantern designer Yu Xin returns to Fish Lantern Village, seeing old fish lanterns gathering dust and craftsmanship fading day by day, determined to revitalize waste materials, restore fish lanterns, and restart the mountain village lantern river. At first, old artisan Yu Ye harbored doubts, live streaming even encountered netizen questioning, and heavy rain damaged a large batch of materials. But Xiao Yu, Yu Que, and a group of villagers worked with one heart and mind to overcome heavy difficulties. Everyone transformed the old school building into a restoration workshop, opened handmade classes, completed fish lantern quality tests, and successfully held the Fish Lantern Night Tour Festival. The old craftsmanship was passed down, cultural and creative products opened up sales channels, Xiao Yu's parents who worked away from home chose to return, and the old fish lantern recycling system landed, letting ancient fish lanterns glow with brand-new vitality in the mountain village.