The Jo's storm COBRA Castle! Cobra hits the GIJoe team on two fronts—at the North Pole and in the Amazon! The Joes fight off hordes of new-style BATs and deploy some new hardware of their own. The Amazon supply depot is destroyed and Duke is nearly killed by Destro’s arctic trap! Duke decides that it’s time for a change in tactics. If COBRA is to be defeated, the team has to go “off the grid”.