Cyber Soldier Porygon - S1.E38

Ash and his friends arrive at Pokémon Center where the PokéBall transfer machine has been causing problems, as the transferred Pokémon never end up at the other side. Ash and his friends decide to accompany Porygon, a computerized Pokémon, used by Professor Akihabara to investigate the problem, only to discover Team Rocket and another Porygon are to blame.