After long time, finally Ben 10 Alien Force series ended on 26 March 2010. The Final Battle has double episode.

The Final Battle: Part 1

Albedo has stolen the Ultimatrix from Azmuth and has used it to kidnap Gwen and Kevin. Ben goes to face Albedo and rescue his friends when he quickly discovers that Albedo has been working in conjunction with Vilgax. Ben is defeated by the pair and gives up the Omnitrix to save himself and his friends.

The Final Battle: Part 2

Powerless, Ben goes aboard Vilgax’s ship and faces off with Vilgax to stop his invasion of Earth in their final battle. Albedo gives Ben the Ultimatrix and Ben gets his old aliens and their evolved forms.

Is this end for Ben 10 ? No. New series will be aired on 23 April 2010. This new series has title Ben 10 Evolution. Omnitrix has new name Ultimatrix, more powerful than Omnitrix. See you at New Ben 10 Series.