Imagine if I told you there was a second dimension from Ben Tennyson's world. And in this dimension there's a girl named Brin Tennyson that found a watch just like Bens but blue, and everything that has happened to Ben, has happened to Brin, Brin has a Grandma (Marie) and a cousin Gavin. But when Vilgax rips a hole in the Null Void, Brin, her Grandma and her cousin are transported to Ben's dimension where they find there opposite genders and work together to find out what happened, while this is happening Brin and Ben have to fight foes that dare to challenge them. One Tennyson is a lot, but what about two working together?