Kurt Sloane must learn the ancient kick boxing art of Muay Thai in order to avenge his brother.

David's brother, Kurt, defeats Po in Karate Tiger 3 - Der Kickboxer (1989). A year after Po kills Kurt, David, who has a kickboxing gym in LA, is manipulated into a match against Po.

David Sloan travels to Rio for a kick-box exhibition. There he saves two youngsters and stops a white slaver.

David Sloan must travel to Mexico to save his wife from a savage drug lord who's also an old nemesis.

After David Sloan is murdered, it's up to kick-boxing champ Matt Reeves to avenge him.

A kick boxer is out to avenge his brother.

Right after winning a fight in Las Vegas, Kurt Sloane is sedated and taken to a prison in Bangkok, where he's forced to fight a 6'10" giant for freedom and $1M - but this will require some intense training.