变身侠阿奔 第四季

Some of Ben's old enemies attack a school bus. Ben easily defeats them, and the grateful cheerleaders thank him. It's the start of a perfect day for Ben. Or is it? Duplicates of Grandpa and Gwen show up and tell him he's been captured, he's in a dream world, and the culprits are keeping him there so they can get the Omnitrix. Can Ben distinguish between what is and isn't real?