Dig Those Diglett!
Plot: Ash finds himself among a group of Pokémon Trainers hired to protect a construction site from the interfering ground Pokémon, Diglett. The construction is shut down after it is revealed that the Digletts and Dugtrio are trying to protect their home. Jessie's Ekans and James' Koffing evolve into Arbok and Weezing respectively.
Watch Online Stream for Free Full Episode TV Show Pokemon S01E31