Ep 9. Rats!

Terry McGinnis, the teenager who becomes the new Batman in a futuristic Gotham City, faces a new challenge in the form of the episode titled "Rats!" In season two, episode nine of Batman Beyond, Terry discovers that a new villain named Ratboy is wreaking havoc on the city. Ratboy and his gang of misfits are just a bunch of teenagers who have taken up the persona of rats, crawling through the sewers and tunnels of the city.

As Batman, Terry is tasked with trying to find Ratboy and stop his group from causing any further damage. However, things aren't as straightforward as they seem. Terry soon finds out that the idea behind Ratboy's group is actually a cover-up for something even more sinister.

The episode starts with a shot of Ratboy and his gang running through the city's sewer system, plotting their next big heist. This time, they're planning on stealing a valuable item from a nearby lab. Meanwhile, Terry's friend Max is trying to track down a lead on the mysterious group. With Max's technical expertise, she manages to trace them back to the sewers.

Once Terry finds out about Ratboy, he dons his Batman suit and takes to the rooftops in search of the group. However, the rats are always one step ahead. Their agility and ability to crawl through tight spaces make them difficult to catch. This sees Terry and the rats engage in a cat-and-mouse chase through the city and its underground tunnels.

As the episode progresses, Terry slowly uncovers the mystery behind Ratboy's true motives. It turns out that the teenage gang aren't simply out to cause chaos, but are instead working for a secret organization. This organization has plans to use the rats to break into the city's water supply, sabotaging it and causing chaos throughout Gotham.

Terry is shocked as he realizes the gravity of the situation. He knows that if the rats are successful in their mission, the entire city could be left without water. With time running out, he has to act fast to stop the group and save the city from disaster.

The episode climaxes with a thrilling showdown between Batman and Ratboy's gang. The rats, armed with a host of hi-tech gadgets, put up a fierce fight. However, Terry's combat skills and quick thinking prove to be too much for them. He manages to defeat Ratboy and put an end to the plans of the secret organization.

Overall, "Rats!" is an action-packed episode that serves to showcase Terry's skills as the new Batman. The episode also shines a light on the dangers of blindly following others; something that is especially pertinent for teenagers. It is a fun and engaging addition to the second season of Batman Beyond.