Ash and Brock are watching Master Bruno of the Elite Four battling on television. Misty turns it off, telling Ash to really start training. Ash’s mom knows of where to find Bruno. They head up to a mountain where they stop for muskrat meatballs where an elderly lady has been getting them stolen. They find Team Rocket, and get the meatballs back. The group then head further up the mountain to discover a large trail left by a giant Onix. They escape thanks to Master Bruno. They start to follow him up the mountain, and ask him to help train Ash. He tricks them into helping him prepare dinner. They ask him the secret of Pokémon training, then he tells them that it’s simply to catch the most powerful Pokémon. Brock’s image of Master Bruno is shattered. They hear a noise, it is Team Rocket trying to catch a giant Onix. The Onix drives Team Rocket into a cave. The group see it and try to save Team Rocket, but Team Rocket does not get a break and are flung into the air by the Onix. Ash falls into the area where Onix is. Pikachu dives to protect him, but electric attacks are no good against the Onix. Master Bruno jumps in to save them. He eventually discovers that the Onix was so violent because it had a Sandslash stuck in between one of the rocks of it’s body. Master Bruno is off, and the group continue away from the mountain.
The Onix that Bruno caught had a cross-shaped scar on it's right eye.
At the beginning of the episode the voice-over mentions there is only three weeks left until the Pokémon League competition, yet a few episodes earlier it is stated that there are two weeks until the League begins.
Meowth breaks the fourth wall in this episode by fast-forwarding through Team Rocket's motto.
The meatballs eaten by Ash and Brock are said be made from muskrat, a non-Pokemon animal species.
Jessie: "Prepare for Trouble whippersnapper."
James: "And make it double young feller."
Meowth: "I think we can fast-forward through this."
Meowth grabs a VCR remote and pushes Fast-Forward.
Meowth presses play on the remote.
Meowth: "Meowth, that's right."
Jessie: "(sigh), Exhausting."
James: "I think I bit my tounge."