Ben 10: Alien Force (Classic)

In the middle of fighting another Techadon robot, Ben, Kevin, and Gwen are unexpectedly transported by the Omnitrix to an alien planet named Primus.

Despite being warned by Professor Paradox, Gwen travels back in time to prevent the accident that turned Kevin into a monster from ever happening.

An ill Ben is pleased to see an old friend in Tetrax but is caught off guard when Tetrax demands that Ben give him Chromastone.

The Plumber's Helpers are called upon by Grandpa Max to rescue him from an abandoned space station where he is being attacked by....Ben!

One day when Kevin returns home to find his house ransacked, he enlists Ben and Gwen's help to find out who did it and why.

Albedo Ben has stolen the Ultimatrix (an upgrade to the Omnitrix) from Azmuth and has used it to kidnap Gwen and Kevin.

Albedo Ben has stolen the Ultimatrix (an upgrade to the Omnitrix) from Azmuth and has used it to kidnap Gwen and Kevin.