Ep 8. If All Else Fails

Ben 10: Alien Force season 3 episode 8, "If All Else Fails" follows Ben as he tries to save the world from a deadly virus that is spreading rapidly. The episode begins with Ben and the gang on a mission to stop a group of intergalactic thieves who have stolen a powerful artifact. However, things quickly take a turn for the worse when they discover that the artifact is actually a container holding a powerful virus capable of destroying all life on Earth.

Ben and the rest of the team, including Gwen and Kevin, must race against the clock to stop the virus from being released into the atmosphere. However, they soon realize that the virus has already been activated and is spreading rapidly. As they try to contain the virus, they discover that their normal methods are not working - the virus is too strong and too deadly.

With no other options left, Ben decides to use his Omnitrix to transform into an obscure alien called Nanomech, a microscopic alien capable of entering and manipulating technology. As Nanomech, Ben attempts to enter the computer system responsible for activating the virus and shut it down before it's too late.

However, things only get more complicated when Ben discovers that the virus is not a natural occurrence but was actually created by someone with nefarious intentions. As he navigates the virtual world, he must also uncover the identity of the person behind the virus and stop them from causing any more harm.

All the while, the virus continues to spread, and the clock ticks down towards a global catastrophe. With the fate of the world resting on their shoulders, Ben and the gang must work together to save the day before it's too late.