Pikachu and Pichu

"Pikachu & Pichu" (Japanese: ピチューとピカチュウ) is a short animated Pokémon film released in 2000, often shown alongside feature-length films. The short follows Pikachu as he meets a pair of Pichu brothers during a visit to a big city. In an accident, Pikachu meets the playful Pichu brothers and embarks on an urban adventure with them. They fall from a high building, roll off a bus, fall into a river, and are chased by an angry Houndour. During their journey, they discover a secret base built from tires and discarded materials, and become friends with many other Pokémon. When Pikachu realizes he must return to his trainer, he and the Pichu brothers have to rebuild the secret base they almost destroyed. Ultimately, Pikachu successfully reunites with his friends, and a memorable friendship is established between him and the Pichu brothers. The short showcases Pikachu's lively nature and courage, as well as the valuable friendship he shares with his new friends. The short was released in Japanese theaters on July 8, 2000, and in North American theaters on April 6, 2001.