Ep 13. Back with a Vengeance

Ben 10 is an animated TV series, which follows the story of Ben Tennyson, a 10-year-old boy who discovers an alien device known as the Omnitrix. The device allows him to transform into ten different alien species, each possessing unique abilities and characteristics.

In the second season of the show, Ben is back with a vengeance in Episode 13, aptly titled "Back with a Vengeance." In this episode, Ben's arch-nemesis, Vilgax, returns to Earth with a plan to finally obtain the Omnitrix for himself. Vilgax is an alien warlord who has been hunting Ben since the beginning of the series in order to use the Omnitrix to conquer the universe.

As soon as Vilgax lands on Earth, he launches a full-scale attack on Ben and his friends. Ben, who has been training to use his alien forms more effectively, springs into action to defend his planet. With the help of his grandfather Max and cousin Gwen, Ben is able to fend off Vilgax's initial attack and escape.

However, Vilgax is not deterred. He continues to pursue Ben and eventually captures him, taking possession of the Omnitrix. With the device in his possession, Vilgax becomes nearly invincible, using the powers of the alien forms to wreak havoc on the planet.

But Ben refuses to give up. With the help of Gwen and Max, he must find a way to take back the Omnitrix and defeat Vilgax once and for all. Along the way, Ben learns some important lessons about trust, teamwork, and the true meaning of heroism.

The episode is full of action-packed scenes, as Ben battles Vilgax and his minions using his alien forms. It also explores the deeper themes of loyalty, friendship, and the importance of standing up for what is right. Fans of the series will love this episode for its thrilling action sequences, dynamic characters, and exciting storyline. It is a must-watch for any fan of the Ben 10 franchise.