The silent protagonist of FireRed and LeafGreen is a child who lives in a small town named Pallet Town.
After players start a journey and venture alone into tall grass, a voice warns them to stop.
Professor Oak, a famous Poket researcher, explains to the player that such grass is often the habitat of wild Leaf Green version for pokemon, and encountering them alone can be very dangerous.
He takes the player to his laboratory where the player meets Oak's grandson, another aspiring Poket Trainer.
The player and their rival are both instructed to select a starter Poket for their travels.
The rival then challenges the player to a Poket battle with their newly obtained Poket and continues to battle the player at certain points throughout the games.
After reaching the next city, the player is asked to deliver a parcel to Professor Oak.
Upon returning to the laboratory, the player is presented with a Pokédex, a high-tech encyclopedia that records the entries of any Leaf Green version for pokemon that are captured.
Oak asks the player to fulfill his dream of compiling a comprehensive list of every Poket in the game.
While visiting the region's cities, the player encounters special establishments called Gyms.
Inside these buildings are Gym Leaders, each of whom the player must defeat in a Poket battle to obtain a Gym Badge.
Once a total of eight badges are acquired, the player is given permission to enter the Poket League, which consists of the best Leaf Green version for pokemon trainers in the region.
There the player battles the Elite Four. Also throughout the game, the player has to fight against the forces of Team Rocket, a criminal organization that abuses Poket.
They devise numerous plans to steal rare Poket, all of which the player must foil, meeting and defeating the organization boss Giovanni
After the first time the player defeats the Elite Four, one of the members, Lorelei, disappears.
After gaining access to the Sevii Islands, an entirely new region, the player discovers Lorelei in her house and convinces her to come back with him.
Once more, the protagonist must thwart the Team Rocket's plans on several occasions, recover two artifacts, the Ruby and the Sapphire, and put them in the main computer at One Island.
After that, the player can communicate, battle, trade, etc., with Ruby and Sapphire.
the player is given permission to enter the Poket League, which consists of the best Pokemon Leaf Green Version trainers in the region