A scientist kidnaps Ship, forcing Ben and Julie to mount a rescue mission.
Albedo, a Galvan who looks exactly like Ben, tries to steal the Omnitrix. all ben 10 alien force episodes
The team rescues Cooper Daniels, who has been forced to build a device for the DNAliens. A scientist kidnaps Ship, forcing Ben and Julie
Five years after his last adventure, Ben puts the Omnitrix back on to find his missing grandfather. A scientist kidnaps Ship
Ben loses control of the Omnitrix as Big Chill enters a reproductive cycle.
The final season is more episodic, centering on the return of Vilgax and Kevin’s struggle with his new mutation.