Go sell something in Johto

Quinten Simmons recruited the party to help ship a crate of performance enhancers to a pokeathelon team in the pokemon world because he forgot to limit what planes he supports shipping to. The party is planar shifted with a hazardous looking doohickey that also turns them into pokemon as a side effect and successfully complete the shipment after bumbling around in Goldenrod city for a while. Quinten accidentally broadcasts to the entire city that his teleporter has a very very small chance of destroying the pokemon plane each teleport, then teleports the party back into their own bodies back in Centralia.