Glenwood Chan retires. After an accident, daughter-in-law smashes heirloom, grandson taken. He picks up Mortise and Tenon craft, takes in Moe. He is suppressed by Li Jianfeng, his former apprentice who betrayed his master. Glenwood builds miniature Song Dynasty Rainbow Bridge, dismantles lies at Exhibition, upholds integrity and craft inheritance of a National Master Artisan.