Racing Heavyweights is a racing story following an underdog, family-run team racing in the British Truck Racing Championship, which races 100 mile-per-hour, 5-tonne machines around historical tracks in the UK. Joined by a small battalion of volunteer mechanics, Simon Cole, a veteran truck racing driver gunning for the title after just falling short last season, and his 21-year-old son Archie Handy, one of the youngest racing drivers in the series, race to bring the team to glory.