Episode 189
Ash has defeated Paul and advanced to the semi-finals of the Sinnoh League. Ash's biggest challenge, however, is now ahead of him. His next opponent is Tobias, who has won his eight badges and advanced to the semi-finals of the tournament using solely his Darkrai. Will Ash be able to defeat Darkrai, as well as Tobias's other Pokémon, and advance to the finals?
Aired 26/08/2010EP 189 - Episode 189

2006
Pokémon the Series: Diamond and Pearl
After defeating Brandon and declining the offer to be a Frontier Brain, Ash sets off to travel through the far away land of Sinnoh. Once he gets there, he meets up with Hikari, a local trainer from the region, and they decide to travel together.