Simple

Simple is the thirty-first episode of Ben 10: Alien Force.

Plot
On a distant planet, a war is about to start between red beings and blue beings. Ben, Gwen and Kevin traveled with Ship to this distant planet. On the Plumber trackers, they get a message from a little girl named Probity to stop the war. When they arrive, Ben tries to talk the red aliens into not fighting, and then Kevin meets up with an old friend, Argit and they start selling weapons to both sides. Ben's influencing doesn't work and the red soldiers attack. Ben turns into a "new alien", Lodestar. (Ben transformed into Lodestar, off-screen, at the end of War of the Worlds: Part 2) An alien with magnetic powers and fights back. The red team backs away and retreats.

Ben's various attempts at getting the two sides to form a peace treaty fail miserably. The day of the war comes and Gwen and Probity watch in disgust. Ben turns into Way Big and goes in between the two armies. He talks them into not fighting, but Way Big accidentally knocks down the statue of their sage Zavin: whom both armies were fighting their civil war over in the first place, and the two leaders declare this as an act of war on Ben instead of fighting against each other, uniting them.

Ben, Gwen, and Kevin are forced to retreat and leave the two sides to their war. Kevin is forced to leave Argit and his loot behind as he boards Ship as they leave.

In the end, Probity records a message to Ben saying that now she has no home, has to work double time, and hates him alongside the war. She then discovers Kevin's loot which makes her happy.

Major Events

 * Ben is first seen to transform into Lodestar.
 * Argit returns.
 * Ben attempts to stop a war, but fails.

Omnitrix Alien Debuts

 * Lodestar

Characters

 * Ben Tennyson
 * Gwen Tennyson
 * Kevin Levin
 * Ship
 * Argit
 * Probity (first appearance)
 * Military Leader of Blue Army (first appearance)
 * Military Leader of Red Army (first appearance)
 * Blue Army (first appearance)
 * Red Army (first appearance)
 * Purple Army (both the blue and red armies put together)

Aliens Used

 * Jetray
 * Lodestar (first on-screen appearance; accidental transformation, selected alien was Humungousaur)
 * Spidermonkey
 * Humungousaur (cameo)
 * Swampfire
 * Goop
 * Way Big

Errors

 * When Ben tries transforming into Humungousaur, the hologram shown is Lodestar's.Lodestar hologram.png

Trivia

 * Probity has a dog-dinosaur-like pet that has animation alike of Stich from the 2002 TV production Lilo and Stich.
 * Kevin Levin cries for the first time on screen.
 * This episode plays homeage to the Red vs. Blue web series.