In some modern numbering systems (listing the 1,225th episode of the total franchise), this corresponds to one of Ash's final episodes.
Ash’s Poipole returns, now evolved into Naganadel , to assist in the battle. Pokemon_Ep_140_ITA.mp4
( Sun & Moon , Johto , or Journeys) does your file belong to? In some modern numbering systems (listing the 1,225th
If referring to the original series chronological order, episode 140 takes place during the Johto region. 225th episode of the total franchise)