Ep 21. That's the Stuff

Ben 10 (2005) season 2 episode 21, titled "That's the Stuff", follows the story of Ben Tennyson, a young boy who possesses an alien device that allows him to transform into different aliens. In this particular episode, Ben, along with his cousin Gwen and grandpa Max, decides to take some time off from saving the world and enjoy some leisure time at a luxury spa.

However, Ben soon realizes that all is not as it seems when he encounters several strange occurrences and people at the spa. He suspects that something is amiss and decides to investigate. His suspicions are confirmed when they come across a group of people who have been hypnotized into thinking that they are living their best lives and that the spa resort is the answer to all their problems.

Ben and his team quickly discover that the hypnotic state of the visitors is not natural and that the spa resort is using an alien substance to control them. The substance, called "stuf", contains a special compound that allows it to enter the human body and take control of the mind. The spa resort is using the stuf to control people's thoughts and emotions to make them believe that the spa is the only solution to their problems.

Ben and his team decide to stop the spa resort's evil plans and destroy the stuf. However, they soon realize that it's not as easy as it seems. The stuf has taken root in the minds of the visitors, and they will do anything to protect it. Ben and his team must use all their skills and alien powers to fight off the mind-controlled visitors and stop the spa resort's evil scheme.

The episode is full of action-packed sequences, as Ben and his team use their alien abilities to fight off the hypnotized visitors who are intent on protecting the stuf. The episode also deals with themes such as mind control and the power of suggestion, making the story more engaging and thought-provoking.

Overall, "That's the Stuff" is an exciting episode that keeps viewers on the edge of their seats. It has a great mix of action, adventure, and suspense, making it an entertaining watch for fans of the show. Moreover, it deals with themes that are relevant even today, making it a must-watch for children and adults alike.