Tempus Fugit

When Don and Cody fix the time machine, Viral awakens and seeks revenge on the Turtles. The Turtles and Splinter enter to the machine, but Viral attacks and throws Serling to the machine. Viral teleports The Turtles, Splinter and Serling everywhere on time. Don finds out all and turns Serling into Turtle X. The Turtles, Splinter and Serling go to present, but Viral appears again and forces Don to use the laser blaster. Don hits Splinter and Splinter disappears. The Turtles and Serling return and Don blames himself for losing his master. In the end, Viral is teleported into cyberspace and becomes Cyber Shredder.