Ditto's Mysterious Mansion

Ash and the other seek shelter from the rain inside an abandoned theater house. However, it turns out that the place is not abandoned, as they meet a young girl named Duplica that likes to mimic people. Duplica loves to put on acts wit her Ditto, but she has one small problem. When her Ditto transforms, it can't change its face. Ash, Misty, and Brock decide to do anything they can to help her, though their efforts come up short. Meanwhile, Team Rocket plan to steal Ditto so that they can have it transform into Dratini for Giovanni.