Drex, a former sidekick of Captain Man-turned-supervillain, has been released from prison. As part of his revenge, Drex traps Captain Man in an unbreakable box. After failing to free Captain Man, Henry turns to Schowz for help where he gains a new superpower.
Con Capitan Man fuori gioco, Henry decide di approfittare di un'occasione unica per prendere il controllo e fermare Drex prima che la Man Caverna vada in rovina.
Capitán Man, impedido para combatir a Drex, ordena que traigan a la fuerza a Henry para probar en él un superpoder que unos paisanos de Schwoz desarrollan con el veneno de un lagarto sudafricano y el de una araña peluda.
