When Ash and friends reach a certain Pokémon E. R., Joy informs Ash that a message has arrived for him, from Professor Oak. He promptly calls the professor and learns that in the time since they last spoke, his Pokédex has been upgraded to a new version, providing Ash with information on newly discovered Pokémon. With this new found knowledge, our heroes anxiously prepare for a fresh journey.
S1 | Episode 1
Pokémon - I Choose You!