Ben 10 episode 4 season 1

 The fourth episode of "Ben 10" is titled "Permanent Retirement" and it originally aired on January 27, 2006. Here's a brief summary of the episode:

In "Permanent Retirement," Ben, Gwen, and Grandpa Max find themselves in the retirement community of Sparksville. However, the peaceful retirement home is not as it seems when they discover that the residents are being controlled by an alien creature named Grey Matter, who is using them to carry out robberies.

Ben realizes that he must find a way to stop Grey Matter and free the retirees from his control. He transforms into Upgrade, an alien with the ability to merge with and upgrade technology. With Upgrade's powers, Ben is able to merge with various machines and gain new abilities.

As Upgrade, Ben goes up against Grey Matter and his robotic minions, using his technological prowess to disable their control devices and free the retirees. Throughout the episode, Ben faces challenges and unexpected surprises as he battles Grey Matter and tries to protect the innocent residents.

With the help of Gwen and Grandpa Max, who provide support and assistance, Ben manages to defeat Grey Matter and restore the retirement home to its peaceful state. In the process, Ben learns more about the diverse capabilities of his alien forms and the importance of using his powers responsibly.

"Permanent Retirement" highlights the ongoing adventure and growth of Ben as he encounters different alien creatures and learns how to effectively utilize their powers to combat various threats.