Pokémon Chronicles - Season 1 - Eps 13: Oaknapped!
Ash's friend Richie has come to Professor Oak's lab to ask for advice, but Tracey is the only one home; the Professor is on Seafoam Island for a live TV appearance. At least, that was the idea—when Tracey calls for an update, DJ Mary tells him that Professor Oak has vanished! Tracey and Richie head to the TV station to find out what happened. According to DJ Mary, Professor Oak made it to the morning rehearsal, but after two strangers pulled him away to ask a question, he was never seen again! Security didn't see the Professor or the strangers leave the station, but Richie realizes that the kidnappers posed as deliverymen to get in and out of the building. Indeed, it's just as Richie thought, and Butch and Cassidy are the ones behind the plan. Dr. Namba wants to force the Professor to tell him where to find Pokérus. Namba needs samples of the Pokérus virus to help him with the Pokémon Power Acceleration Project, but Oak refuses to give up the information.
About Pokémon Chronicles

Title: Pokémon Chronicles
First Air Date: 1998-12-22
Last Air Date: 2004-09-28
Status: Ended
Rating: 7.948/10 (from 184 votes)
Language: JA
Seasons: 1
Total Episodes: 22
Network: TV Tokyo
Genres: Animation, Kids
Production Companies: OLM, TV Tokyo, Shogakukan Production
Synopsis
Pokémon Chronicles, partly known in Japan as Pocket Monsters Side Stories, is a spin-off series of the Pokémon anime, revolving around characters other than Ash Ketchum.
Cast

Yuji Ueda

Miyako Ito

Mayumi Izuka

Yuko Kobayashi

Tomokazu Seki

Kenji Nojima