Redbelt (2008)

Brazilian jiu-jitsu instructor Mike Terry is a teacher from God. A talented self-taught psychologist, belongs to the type of people who always achieve their goals. A true master of his craft knows how to convey educational material to students. No circumstances can break a strong-minded man who is used to following his own principles.

However, this position of Mike does not suit many. At some point, Terry is hit by a series of unpleasant events, which are very difficult to resist alone. He needs to stand by any fate and not break down in order to preserve honor and dignity. The main character, who finds himself involved in sports competitions that have long ceased to be honest, is forced to go against the selling system. Serious trials await him, since influential people who earn money from contractual fights do not intend to lose large sums because of a wayward coach.