When Dr. Psychobos steals a part out of the Omnitrix, causing chaotic side-effects, it's up to Ben, Rook, and a small team of Plumbers get everything back to normal.

Gwen and Kevin pay Ben a surprise visit, but does Kevin's strange behavior have anything to do with an angry Tetramand princess, or her father's fleet of warships prepared to attack the Earth?

When their fishing trip in Undertown takes a bizarre twist, Ben, Rook, and Grandpa Max, begin their search for a ship-bottling alien pirate who has captured Magister Patelliday.

The Plumbers' resident geniuses, Blukic and Driba set off to find some smoothies.

Khyber and his dog attacks Ben and Rook while they're at the Olde Bellwood Days festival, but does the hunter have other plans?

Ben and Rook must stop the evil Robots from Dimension 12 while trapped in their own pre-pubescent bodies, thanks to Ben's childhood rival.

Rook brings Ben to his home planet to meet the family. Unbeknownst to them, an old foe is raising an army to steal the planet's most precious resource!

When Eon causes 11-year old Ben swap minds with teen Ben, it's up to Gwen, Rook, and Professor Paradox to set things straight.

While out looking for the elusive 23rd Mr. Smoothy's store with Blukic and Driba, Ben meets an alternate version of himself.

As payment for destroying his car, Mr. Baumann orders Ben to make deliveries for him without using the Omnitrix.