BW 003 "Mijumaru! Meguroko! Close Call!!"
Satoshi notices that the Mijumaru from before is still following him and decides to capture it. As soon as he receives its Monster Ball, the pokemon goes MIA, requiring Satoshi and Iris to search for it. As they look for the pokemon, they come across a boy named Dan and find out about a problem a group of Meguroc are causing for his father's hotel.