Five years later, 15-year-old Ben Tennyson chooses to once again put on the Omnitrix and discovers that it has reconfigured his Dna and can now transform him into 10 brand new aliens. Joined by his super-powered cousin Gwen Tennyson and his equally powerful former enemy Kevin Levin, Ben is on a mission to find his missing Grandpa Max. In order to save his Grandpa, Ben must defeat the evil Dnaliens, a powerful alien race intent on destroying the galaxy, starting with planet Earth.
13 episodes in this season
E1
23m
A new villain comes into town, his name is Darkstar, he commits some crimes and gets the team's attention fast
E2
23m
During a battle Ben and an alien commander are teleported to a distant world. They must put their differences aside if they're going to have any chance of finding a way to return to Earth.
E3
23m
An alien impersonates Ben with hopes of using his Omnitrix to annihilate him.
E4
23m
Kevin asks Gwen to the school dance; Ben fears he's losing control of the Omnitrix.
E5
23m
Cooper is kidnapped by the DNAliens, who want him to build a mystery arch.
E6
23m
To find and destroy the alien dragon species, the Forever Knights capture Ship to control a starship they built out of alien technology to locate their homeworld and destroy them.
E7
23m
When Ben's parents discover his ability to turn into aliens, they forbid him from using the Omnitrix and later ground him from using it again. Eventually Gwen is grounded too leaving Kevin to stop the DNAliens.
E8
23m
After Gwen receives an S.O.S. from Helen, Ben must go into the Null Void to save her and Manny. Once there, he must find The Wrench in order to stop D'Void, who happens to be Ben's old enemy Dr. Animo
E9
23m
Ben and the gang rescue a runaway prisoner of the DNAliens.
E10
23m
The gang helps the prince of the arachna-chimps regain power
E11
23m
Ben cares for a baby monster and helps locate its parents before the DNAliens find it.
E12
23m
Ben, Gwen and Kevin gather their allies to counter the threat of the incoming Highbreed fleet. Azmuth reveals a secret about the Omnitrix.
E13
23m
Ben goes to the HighBreeds' world in an attempt to stop their attack on Earth.
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