Hidden Fortress is the thirteenth episode from Super Robot Monkey Team Hyperforce Go!
Plot
A foe known as the "Supreme Destructor" is causing havoc. He apparently killed Jinmay. The Hyperforce travel to outer space in search of the villain. He is revealed to be Mandarin, working for the Skeleton King. The monkeys are busy trying to escape through an obstacle course, so they can't help Chiro beat him. Antauri sends Chiro a message to use the Power Primate to defeat Mandarin. Then, Sakko appears, also working for Skeleton King. Can the Power Primate's force defeat all three of these evil fiends?