Read episode 44 here.
When Mime Jr. catches a cold, James rushes it to the Pokémon Center. In the process he realizes something that could change his life. Meanwhile, Brock offers up his services as a traveling Pokémon Doctor to the local Nurse Joy. One can guess how that turns out.
Also, I have just updated the Tenno Region page with a new version of the Tenno Map, this one looking like one taken right out of the games. Make sure to check it out.