The Enemy of My Enemy

The Enemy of My Enemy is the eighteenth episode of Ben 10: Ultimate Alien.

Plot
Argit infiltrates the Plumbers' Academy with a plan to help the Vreedle Brothers do the last thing anyone would expect.

Characters

 * Ben Tennyson
 * Gwen Tennyson
 * Kevin Levin

Villains

 * Argit
 * Vreedle Brothers

Trivia

 * This is the first time since Alien Force that the Vreedle Brothers return.
 * it's most likely they die again