Pokemon 3D Adventure: Mew wo Sagase!
English name: Pokémon 3D Adventure: Find Mew!
Genres: Adventure, Comedy, Fantasy
Type: Movie, Episodes: 1
Aired: Mar 18, 2005
Studio: OLM
Source: Game
Rating: PG - Children
Synopsis:
Pikachu and Meowth are on a search: a search for the elusive Pokémon, Mew. They search everywhere! The sea, the sky, the woods...will they ever find Mew? 

(Source: Bulbapedia)