Instead of risking more incomplete or malicious files:
Sometimes, episodes of Cartoon Network shows, including "Ben 10," are available on the official Cartoon Network website or their app, though availability may vary by region. Download - Ben.10.Alien.Force.S01e12.Plumbers....
Downloading copyrighted material from unofficial sources is illegal in most jurisdictions. Instead of risking more incomplete or malicious files:
Last updated: [Current date] – Prices and availability subject to change. episodes of Cartoon Network shows
For those who prefer physical media, purchasing a DVD of the season that includes "Plumbers Academy" can be a great option. This method ensures you have a legal copy and can be a good choice for collectors.