BW 020 "Pikachu VS Meguroco VS Koaruhie!!"
Satoshi and Pikachu are training with Satoshi's newly-hatched Zurug. Just as they decide to take a break and have lunch, they fall into a pitfall! When they look ahead, they see the sunglasses wearing Meguroc from before! It seems as if it sprung a trap on Pikachu in order to challenge it to a battle, so Satoshi and Pikachu accept its challenge. However, a "water bird" pokemon, Koaruhi, appears and steals the Meguroc's sunglasses! It turns out that the Koaruhi is a prankster who enjoys messing with Satoshi and his friends, one after the other!