Ben 10: Alien Swarm (2009)

Ben is forced to make the ultimate decision: break ranks from the Plumbers in order to help a girl named Elena, who's father has been abducted by aliens. Ben soon realises helping the mysterious Elena might help uncover an alien threat to our world. Joining him on his adventures are Gwen and Kevin, super-powered heroes in their own right, who must trust each other's i...