Episode Title:Virtual Reality Check.Episode Description:The turtles retreat from the Cyber-Shredder back into the real world, exploding the portal in the process, leaving Donatello to try repairing it. Leonardo, Raphael, and Michelangelo experience a strange series of events that suggests that they are still in cyberspace; when they try warning Donnie, the Cyber-Shredder releases a virus to topple buildings and form mountains to block them. The Turtles eventually get to Don and tell him they're still in cyberspace. Don opens a portal for the Turtles to escape from cyberspace. However, the Cyber-Shredder managed to copy Don's plans thanks to a bug, allowing him to construct a perfected portal and enter the real world, where Khan and his faction of the Foot await.