Fly Guys steals the Rust Bucket while Ben is cleaning it.
When Ben interferes with magician Hex's quest to switch bodies with Gwen.
Ben, Gwen, and Max's trip to Niagara Falls is cut short by the Hydromanders.
While winning big on a Sumo Slammers video game, Ben gets the idea to try a real wrestling match.
Ben accidentally allows the Bug Gang to go free, while filming his own indie film.
Ben and Gwen's camping trip is interrupted by the Weatherheads.
Ben learns the value of teamwork in order to escape from an animal prison.
Ben teams up with Grandpa Max's college buddies to keep the clown Zombozo from robbing a stadium.
Ben, Gwen and Max take a tour of Fort Knox.
Ben gets a rare Sumo Slammers card during a tour of historic Oldeville.
Ben can't keep quiet and awakens a dragon, while at a no-noise monastery.
Ben and Gwen try to stay awake all night in a theme park that is open 24 hours a day.
A wizard cosplayer gets his hands on a magical wand at Comic Con.
In a coastal town Ben must face his worst fear, squid.
Ben and Gwen are transformed into babies by Nanny Nightmare.
The gang meet a family that appears to be a mirror image of them.
Ben uncovers a plot by LaGrange to find treasure buried below Yellowstone National Park.
Ben has to stop villain Steam Smythe from getting the power source sealed in a Tesla time capsule.
Ben earns extra money by mowing Bob's lawn.
Ben and Gwen are excited to attend an Earth Day EDM concert in Portland.
When Ben tries to save the Hoover Dam from disaster, tough guy hero Tim Buktu swoops in to help.
When the trio visits the set of a movie, Ben discovers that the star, Michael Morningstar, is an energy vampire.
Three famous chefs set their sights on using Wildvine in an exotic dish.
When Ben claims that a a girl is Frightwig in disguise, no one believes him, and Ben sets out to prove his case.
During a book signing, Ben must stop Hex from getting his hands on a grimoire that can create hybrids.
Xingo leaps from his animated dimension to that of Ben's dimension.
When the Rust Bucket breaks down, the trio finds themselves in the last leg of an off-road auto race.
Ben is attacked by a gang of Dr. Amino's biker mutants, the Ground Hawgs, while trying to play mini golf.
When Ben, Gwen and Max return to Max's alma mater, they learn that Dr. Animo has found a way to release the animal nature within humans.
While visiting the "House of the Future," Ben finds Steam Smythe searching for a device that will allow him to create weapons.
Ben, Gwen and Max search for a legendary Forgeti, a yeti that makes people forget; Dr. Animo conspires to use the Forgeti for a plot to rob banks without anyone remembering.
Ben goes to the Big Bacon Pig Parade, but childhood friend Penny Heaven meets the family to ruin Ben's fun with her safety-obsessed self.
The Bugg Brothers return with a plan to duplicate Diamondhead, but their cloning ray gun fires on Max instead -- multiplying him endlessly.
When the Rust Bucket runs out of gas, Ben, Gwen, and Max are forced to stay at a hotel being menaced by Creepy Carl, a local folklore expert, who may actually be a ghost.
Ben, Gwen and Max visit their favorite amusement park, which has been renovated and rebranded as AdrenaWORLD, and learn that it is being managed by Zombozo and his trio of new henchmen.
Ben and Billy Billions clash in a duel for supremacy at the Laser Tag Park, but when Billy inadvertently ignites a robot rebellion, their game escalates into a full-blown war.
Gax, an eleventh alien, arrives as Ben fights another of Dr. Animo's monsters; when the Omnitrix starts behaving strangely, Ben begins to transform from one alien to another without being able to stop.
With the Omnitrix still uncontrollable, Ben asks a mysterious friend of Max to repair it; when three bounty hunters land to recover the watch, Ben has to try and fight them despite his current predicament.
Ben heads into the forest to prevent his unpredictable transformations from causing damage; Gax helps Ben discover his powers, but Ben quickly realizes that this new friend is actually an opponent.
Ben continues to transform rapidly without stopping and can't revert to human form; while Vilgax tries to take the energy of a volcano to recharge his ship and return home, Ben gets the idea to update the Omnitrix.