DP190: The Brockster Is In!

Synopsis
With the Sinnoh League behind them, Ash and friends take a ship back to Dawn’s hometown of Twinleaf. A crisis emerges, however, when a group of Tentacruel attack the ship and poison many of the Pokémon on board. With no other doctor on the ship, Brock is the only one who can help those Pokémon. Will he succeed before it’s too late?