In this first book of an illustrated middle grade series by a 1 New York Times-bestselling author, Marc learns to become a Warrior Kid after his uncle Jake, a Navy SEAL, comes to stay for the summer.. Fifth grade was the worst year of Marcs life. He stunk at gym class, math was too hard for him, the school lunch was horrible, and his class field trip was ruined because he couldnt swim. And the most awful thing about fifth grade Kenny Williamson, the class bully, who calls himself the King of the Jungle Gym.. When Marcs mother tells him that his uncle Jake is coming to stay for the whole summer, Marc cant wait. Uncle Jake is a for-real, super-cool Navy SEAL. And Uncle Jake has a plan.. Hes going to turn Marc into a warrior..