The path of a warrior boy

The fifth grade was the worst year in the life of Mark. In physical education lessons, he could never catch up and everyone laughed at him, the mathematics seemed too complicated to him, the dinners in the dining room were terribly tasteless, and the school trip to the lake was spoiled because he did not know how to swim. But the worst in the fifth grade is Kenny Williamson, the main bully who considers himself the king of the school ...
The life of the brand is changing when his native Uncle Jake, a cool special forces and marine corpsis, comes to them with his mother for the whole summer. He helps Mark become a real warrior, because it is not at all as easy as it seems! To become a warrior, you need to work a lot - to train every morning, eat right, study hard and observe strict self -discipline. Mark must also learn to resist school hooligans and create his own warrior code.
Will an ordinary fifth -grader become a real warrior before the start of the new school year?