Ep 16. Eternal Youth

In Batman: The Animated Series season 1 episode 16, titled "Eternal Youth," Bruce Wayne becomes concerned when an old friend of his, Dr. Jason Woodrue, invites him to a health spa called Eternal Youth. Bruce initially declines the invitation but changes his mind when he begins to suspect that Dr. Woodrue is up to something sinister.

When Batman arrives at the spa, he discovers that the guests are being given a special "fountain of youth" treatment that promises to restore their youth and vitality. However, Batman soon realizes that the treatment is not what it seems, and that Dr. Woodrue is actually using plant extracts to brainwash his clients into becoming his loyal followers.

As Batman investigates further, he discovers that Dr. Woodrue has teamed up with Poison Ivy, a notorious villain who is obsessed with plant life. Together, they plan to use the spa to brainwash the wealthy elite of Gotham City and turn them into an army of followers who will help them take over the city.

With the help of Batgirl, Batman sets out to stop Dr. Woodrue and Poison Ivy from carrying out their plan. Along the way, they are forced to battle a group of brainwashed spa guests who are under the control of Dr. Woodrue and Poison Ivy.

Despite the odds being against them, Batman and Batgirl are able to defeat Dr. Woodrue and Poison Ivy and rescue the brainwashed spa guests. With the day saved, Batman reflects on the importance of maintaining the balance between technology and nature, and the dangers of allowing either to become too powerful.