Pokémon Red and Green Versions/Plot

Red and Green begin the Pokémon series in the region of Kanto, where players play the role of, a ten-year-old boy who has just started his journey as a Pokémon Trainer from Pallet Town, on the same day as his , who is Red's rival and the grandson of the local authority on Pokémon, Professor Oak. Oak lets the two boys choose a starter Pokémon, a choice of the, the  , or the   (and with the player's rival choosing the Pokémon that has a type advantage over the player's Pokémon). Oak also gives them a Pokédex and asks them to catch all the Pokémon in the region.

During their travels, the player will encounter the villainous Team Rocket and their boss Giovanni, a criminal gang that treat Pokémon as tools, rather than train them as friends and partners. The player must defeat them to put a stop to their crimes, which include killing a while keeping Mr. Fuji hostage, and taking control of Silph Co. to obtain plans for the Master Ball. The rival will also continuously challenge the player to a, with an increasingly powerful team. As the player's own Pokémon become more powerful, he or she draws closer to the Indigo Plateau.

Between the battles with Team Rocket, their rival, and other trainers, the player journeys across the region, defeating all the Gym Leaders: Brock, Misty, Lt. Surge, Erika, Koga, Sabrina and Blaine. The eighth and final Gym Leader is Team Rocket's boss, Giovanni, who disbands the team after his final defeat within his Gym. After defeating all eight Gym Leaders, the player goes on to challenge the Elite Four: Lorelei, Bruno, Agatha, and Lance, and finally, in the last battle, the current Champion, the player's.

The player becomes the Champion after defeating their rival and is commended by Professor Oak for their friendship with Pokémon. After becoming Champion, the player will be allowed to enter the mysterious Cerulean Cave, filled with strong Pokémon, where the Legendary awaits.