Ben 10: Alien Force takes place five years after the original series, featuring a 15-year-old Ben Tennyson who must re-don the Omnitrix to find his missing Grandpa Max. The series consists of 46 episodes spread across three seasons. Season 1: The Return (13 Episodes)
| Episode | Title | Key Plot Point | | :--- | :--- | :--- | | 14 | Darkstar Rising | Michael Morningstar returns, draining energy. Kevin’s backstory deepens. | | 15 | Alone Together | Fan Favorite. 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. | all ben 10 alien force episodes
Synopsis: Ben is transported to a peaceful alien planet that has no concept of violence. However, a parasitic species is slowly taking over the population. Key moment: Ben must win a fight without using violence—a philosophical episode. Ben 10: Alien Force takes place five years