The principle of balance. Kosh A.

The Red Dragon Club has only recently became part of the rating of the best fighters of the world, and now its participants were left without a teacher. Senseich is in a coma, and the guys ahead of the guys with a very strong adversary. The mysterious brother and sister - the “fighting maid” Elena and the harsh guard Ivan, and their training methods can be more dangerous than the battles of the rating are taken for their training.

And most importantly - four friends have to decide which of them will go to a mortal duel and risk their life.