Pokémon - The Cave of Mirrors!

Seizoen: 16 - Aflevering: 36 / 860 - Eerst uitgezonden: 31 juli 2014 - Episode ID: 979447

While travelling in the Reflection Cave, Ash's reflection takes Pikachu away from him, prompting him to follow into a world within the reflection, leaving Clemont, Serena, and Bonnie to find a way to bring him back. After Ash arrives in the Mirror Dimension, he discovers that his mirror self needs help finding his Pikachu.