Karate is an action revenge drama. The movie revolves around a scientist, who designs a diamond in a way that it can focus all the sun rays in such a way that it can burn any possible thing. Later, when a thief learns about the diamond, he kills the scientist to get hold of the diamond. The scientists’ sons get separated post his death. The only mission of the two boys is to reunite, so together they can find and finish the man responsible for their father’s death. Will the two succeed in their mission?