The Imperial Commissary Collectors Convention comes to the Williamson County Ag Expo Center this weekend. Sci-fi fans can attend Saturday or Sunday with general admission tickets or get a VIP ticket for Friday access and other benefits. $80 (adult weekend pass), $250 (VIP pass); daily and family options available. Hours vary daily. Williamson County Ag Expo Park, 4215 Long Lane, Franklin. www.iccollectorsconvention.com
The HUNT Antique & Artisan Show
This Leiper's Fork fundraiser was rescheduled due to heavy rains this summer. Head to the corner of Floyd and Old Hillsboro roads to see artisans, antique dealers, merchandise, food trucks, antique cars and more. Proceeds will benefit Friends of the Fork, Inc. Times vary. $5 (admission), free parking. benefiting Friends of the Fork, Inc. http://www.facebook.com/events/430698587477965/?event_time_id=477461879468302
Unarmed Gun Defense
Learn survival skills, including how to defend yourself against an armed assailant, with this session at Elite Martial Arts of Brentwood. 11:30 a.m.-1 p.m. $30 (members), $35 (nonmembers). Elite Martial Arts of Brentwood, 6940 Moores Lane, Brentwood. 615-661-5595.
Chinese Mid-Autumn Festival
Granny White Park will play host to the Greater Nashville Chinese Association's 2019 Chinese Mid-Autumn Festival. The event is free and includes activities like riddles, children's games, origami fan-making and moon cakes. There will also be dance, music and theater performances. Boxed dinners are available but must be pre-purchased. Free (admission), $7 (dinner). 5-8 p.m. Granny White Park, 610 Granny White Pike., Brentwood. https://www.facebook.com/events/429646094563662/