The first 3 episodes were great overall, but episode 4 takes a turn and ultimately becomes a giant ad to get more people to play Pokémon GO. If they focused more on plot and character development, along with staying consistent with some of the previously set rules in the Pokémon world (i.e. Battling wild Pokémon before being able to catch them), it would be rated it much higher.
Review of Pokémon Journeys: The Series
