WTF: World Thumbwrestling Federation (2017) online

A Documentary crew follows Thumbwrestling's biggest event in what might be it's final year. 5 years after the villainous Mr. Venom defeated Papa Brussel by thumb submission, it is now Papa Brussel's sons who must fight through the ranks of some of the best thumb wrestlers in the world for their chance at dethroning the champ, revitalizing the sport, and restoring the Brussel legacy.