Ep 13. A Better Pill to Swallow

In the Pokemon season 4 episode 13, titled "A Better Pill to Swallow," Ash, Misty, and Brock find themselves on their way to Kumquat Island, where they plan to participate in a battle tournament. Along the way, they encounter a young girl named Luka who is searching for a rare berry that can help cure her sick Lapras.

As they reach Kumquat Island, Ash and his friends join the tournament, which is being held by a group of scientists who are studying Pokemon battles as a form of research. While the competition is fierce, Ash manages to come out on top and wins the tournament.

However, as the group prepares to leave the island, they receive news that Luka's Lapras has taken a turn for the worse. They rush to help her and discover that the only cure for Lapras' condition is a rare berry that can only be found on a nearby mountain.

Determined to save Lapras, Ash and his friends set out for the mountain, battling their way through wild Pokemon and treacherous terrain. When they finally locate the berry, they are confronted by a group of scientists who have been experimenting on Pokemon in an attempt to create a new form of battle medication.

Ash and his friends are horrified by the scientists' cruel methods, and they decide to take matters into their own hands. With the help of Luka and her Lapras, they fight to shut down the scientists' operation, freeing the captive Pokemon and taking the valuable berry they need to save Lapras.

In the end, the group returns to Luka's Lapras and successfully administers the berry, curing the sick Pokemon. Ash and his friends are hailed as heroes, and they continue on their journey with a newfound sense of purpose and determination to help all the Pokemon they encounter.