: Ben's hand is sent to another dimension, and he must fight without it. If All Else Fails
Kevin betrays the team's trust by stealing the Rustbucket to trade for alien tech. all ben 10 alien force episodes
The team meets Professor Paradox, a time-traveling human who was trapped in a dimensional void for centuries. He reveals the true scale of the High Breed threat: a genocide of all non-pure-blood species. Key moment: Paradox becomes a recurring mentor figure. : Ben's hand is sent to another dimension,
: Vreedle Brothers repo men try to reclaim Julie's pet, Ship. Single Handed He reveals the true scale of the High
When Ben 10: Alien Force premiered on Cartoon Network in April 2008, it marked a bold evolution for the franchise. Gone were the summer road trip vibes and the 10-year-old Ben Tennyson. In its place was a darker, more serialized story featuring a 15-year-old Ben, who had hung up the Omnitrix for five years. The world had moved on, but a new alien threat—the High Breed—forced him to reunite with his estranged cousin Gwen and his former rival, Kevin Levin.
| Episode | Title | Key Plot Point | | :--- | :--- | :--- | | 14 | Darkstar Rising | Michael Morningstar returns, draining energy. Kevin’s backstory deepens. | | 15 | Alone Together | Ben is stranded on a hostile moon with a wounded High Breed soldier. A masterclass in enemy empathy. | | 16 | Good Copy, Bad Copy | Ben fights Albedo—an evil duplicate with his own Omnitrix. | | 17 | Save the Last Dance | Ben’s relationship with girls vs. heroics. | | 18 | Undercover | The team infiltrates the High Breed command. | | 19 | Pet Project | The tragic story of Ship (Gwen’s alien dog). | | 20 | Grounded | Ben’s dad finds out about the Omnitrix. | | 21 | Voided | Return to the Null Void. | | 22 | Inside Man | Stunning twist: A High Breed general defects. | | 23 | Bird of Prey | The origin of the alien bird, Astrodactyl. | | 24 | Unearthed | A subterranean alien civilization. | | 25 | War of the Worlds (Part 1) | Finale. Ben unlocks the "Humungousaur ultimate size" and invades the High Breed homeworld. | | 26 | War of the Worlds (Part 2) | Ben doesn't win by fighting—he cures the High Breed of their genetic sickness, ending the war peacefully. |