Clip from Ben 10. Ben, Gwen and Granpa arrive in the Bermuda Triangle

In Texas, a group of men discover a mysterious mask belonging to Ah Puch, the Mayan god of death and destruction. The mask is the key to the ultimate weapon in the world, known as the Sword of Ekchuah. However, when Grandpa Max and his grandkids learn that the mask is discovered, he impatiently sets out to obtain the mask, so that it does not fall in the wrong hands. Unfortunately, they find out that Enoch of The Organization is after it as well. The kids worry of how Grandpa Max has become, but with Enoch in the way, will Grandpa Max find the sword before him?

When Ben and Gwen argue over a birthday party to occur in the next few months, Grandpa Max is distracted by their quarreling and almost hits a young boy camper. To ensure the boy's life, they head to Camp Opinicon, only to find no people around. As they investigate the premises, they find twins, whom were also hiding from something that may have a connection to the lifeless camp. Grandpa Max readies to leave the area with the children, only to find that the RV's engine is clogged with a mysterious fungus. While the kids take in shelter in a nearby cabin, Grandpa Max is captured. Now Ben must come to the rescue to discover a new alien form, as well as a way to destroy the evil alien Myceloid Monsters and their Fungal Master, and learn the benefits of what sharing can do.

Clip from Ben 10 in which Ben 10 meets his hero Kangaroo Commando

Ben 10 Episode 19: The Galactic Enforcers. At a museum, Ben sits and reads a comic, daydreaming about himself as a super hero. As Gwen interrupts him, she is not happy how Ben treats the artwork. His day has been a bore, but when an alien vessel arrives, an alien named Volcanus and the bounty hunter Sixsix come to pursue the Biocenthium alloy to complete a mixture with Element X to create a bomb, strong enough to destroy a whole solar system. Suddenly, Ben meets The Galactic Enforcers, a group of three who serve in protecting the galaxy under the conduct code. Ben is intrigued by their heroic appearance, but are they really something to be looking up to?

In the middle of nowhere, Ben 10 takes the form of Diamond Head and fights Kevin 11, who is still in his mutated form. They are taken to a ship, where a battle between different aliens are held. But when a mechanical droid named Slix decides to create a bond with Ben and Kevin as a team, they immediately turn his idea down. But with no choice, they must find a way out.

Ben 10 Episode 17: Gwen 10. When two robbers try to rob a gas station, Ben decides to turn into Four Arms to stop them. However, when he tries to activate the Omnitrix, it seems to be missing from his wrist. To make the situation more confusing, Grandpa Max and Gwen seem to have no knowledge of the summer they've spent together so far.

Ben 10 Episode 16: Framed -Ben, Gwen, and Grandpa Max are waiting in line for a newly released video game. As Gwen grows impatient, Grandpa Max decides to take her inside a bookstore to stay from the heat. Moments later, an angered looking Fourarms comes out of the video game store by force, giving no consideration towards innocent people. Grandpa Max and Gwen find Ben at the RV, though he claims that he did not go beserk and become dangerous. Ben suspects that there is someone using his identity to ruin his reputation as a hero.