Pokémon: Diamond and Pearl · Sinnoh League Victors arc
DP181 · Bucking the Treasure Trend!
トレジャーハンター・バクとヤジロン！
Synopsis
What happens.
Ash and his friends are on a boat to Lily of the Valley Island for the Sinnoh League. As the group exits onto the ship deck, a ball rolls by and Dawn's Piplup chases after it. However, he ends up bumping into a Baltoy at the corner.
Synopsis adapted from Bulbapedia's DP181 entry, used under CC-BY-NC-SA 2.5.
Story arc · DP158-DP193
Sinnoh League Victors.
Lily of the Valley Conference. Ash defeats Paul in the quarterfinals (the franchise's most-cited rival victory). Falls to Tobias's Darkrai then Latios in the semifinals. Cast splits at the end.
Read the full Diamond & Pearl guidePokémon featured · 20
Who appears.
Linked entries open the species page on the Pokédex. Items without a sprite (alternate forms, regional variants, generic group references) fall back to a name pill.
More from this arc
Other episodes in Sinnoh League Victors.
Episode synopsis from Bulbapedia, CC-BY-NC-SA 2.5. Editorial context (arc affiliation, cultural moments, character signatures) hand-verified May 2026. Pokémon, character names, and series titles © Nintendo, Game Freak, Creatures Inc., The Pokémon Company, OLM Inc. This is an unofficial fan reference.