Ben 10-Ultimate Alien : Vol 3 Power Struggle (DVD, 2010)

Ben hopes to vanquish Aggregor for good but there are complications not least of which includes Ben falling into a time barrier. He is rescued by Gwen but Ben's 10-year-old self comes out with him! Kevin also has some problems his personality changes and he takes on a new form. This leads to the climactic end to Season 1 where the Ben must take on a very surprising enemy. Rated PG