Rivalries fuel showdowns where kids strike first and strike hard.
Long-standing feuds between dojos collide at America's Blackbelt Byway.
Sifu Mark hosts the first tournament of the circuit.
Bedlam erupts between dojos as Shihan Kinchen hosts his first tournament.
A last-minute rule change at a tournament is met with a furious response.
John Chung's team defends their turf in the Sidekick International.
Rivalries come to a head in one final showdown of the season.
