Red is an eleven-year-old boy who has just started his journey as a Pokémon Trainer from Pallet Town, on the same day as Green, who is Red's rival and the grandson of the local authority on Pokémon, Professor Oak. Oak lets the two boys choose a first partner Pokémon—a choice from the Grass-type Bulbasaur, the Fire-type Charmander, or the Water-type Squirtle. Oak also gives them a Pokédex and asks them to catch all the Pokémon in the region.
Stopping in Viridian City's Poké Mart, Red is asked to deliver a package to the professor which is revealed to be a Pokédex. Oak gives Red and Green a Pokédex and asks them to use it to study and find new Pokemon.
From here, Red travels across Kanto to battle Gym Leaders and collect Gym Badges with the ultimate goal to defeat the Elite Four and become the Pokemon Champion.
Along his journey:
Red encounters Team Rocket in Mt. Moon where Red can obtain either a Helix Fossil or Dome Fossil
Red frees Bill from his transformation into a Pokemon. Bill gives Red a ticket to board the S.S. Anne, a luxury ship.
Red defeats a Team Rocket grunt on Nugget Bridge who is recruiting members and another Team Rocket grunt who just robbed a house for the TM Dig.
Red obtains the Bike Voucher from the president of the Pokemon Fan Club.
On the S.S. Anne, Red helps the captain with his seasickness and receives the HM Cut in return. This allows him to face and defeat the Vermillion City Gym Leader Lt. Surge.
Travels through Diglett’s Cave to obtain HM Flash which is essential to traverse through Rock Tunnel.
In Lavender Town, the Pokemon Tower is haunted by a ghost that prevents Red from going further up the tower.
Red travels to Celadon City and encounters Team Rocket at the Rocket Game Corner which turns out to be a Rocket Hideout. He defeats the Team Rocket boss, Giovanni who leaves behind a Silph Scope. Red also obtains Tea at the Celadon Mansion which opens up the road to Saffron City.
With the Silph Scope, Red is able to identify the ghost at Pokemon Tower as a deceased Marowak spirit and save Mr. Fuji from Team Rocket. Mr Fuji gifts Red a PokeFlute which he can use to awaken two Snorlax that are blocking the route to Fuchsia City.
Red obtains HM Surf in the Kanto Safari Zone and also recovers the Safari Zone Warden’s Gold Teeth which rewards Red with HM Strength.
Back in Saffron City, Team Rocket has taken over Silph Co.. Red infiltrates Silph Co and defeats Giovanni once again. The president of Silph Co. gifts Red the Master Ball.
Red defeats the Fighting Gym and obtains either a Hitmonchan or Hitmonlee.
Red travels through the Power Plant where he encounters Zapdos.
Red travels through Seafoam Islands where he encounters Articuno.
Red reaches Cinnabar Island where he must traverse the Pokemon Mansion in order to find the key to the Cinnabar Island Gym. He also revives the fossil he obtained in Mt. Moon.
Back in Viridian City, the Gym Leader is revealed to be Giovanni. Red defeats Giovanni who vows to disband Team Rocket and disappears.
Now with eight Badges, Red travels through Victory Road to reach the Pokémon League at Indigo Plateau.
Red defeats the Elite Four and the current champion Green.
Red ventures through Cerulean Cave where he encounters Mewtwo.
The Sevii Islands
Bill requests Red’s help in a small region south of Kanto called the Sevii Islands. On One Island, Red meets Bill’s friend Celio who is attempting to connect the islands’ PC system to Kanto.
Red travels to Two Island to deliver a meteorite from Celio and where the daughter of the owner of the Joyful Game Corner has gone missing, and in Three Island where a group of invading Bikers are causing trouble. After defeating them and finding the lost girl, Lostelle, who is in Berry Forest,
Professor Oak then asks Red to travels through the additional 4 Islands to discover additional Pokemon. Meanwhile, there is some more work that Celio needs to do on his network machine, as he wishes to link the network to the Hoenn region. The signal, however, is not strong enough, and he needs the Ruby and the Sapphire, two items found in the Sevii Islands, to strengthen it. He asks Red to retrieve the two items.
Red helps Lorelei defeat some Team Rocket grunts on her hometown on Four Island. Red finds the Ruby deep in a cave in Mt. Ember, which Team Rocket grunts have set up as a hideout. Red also encounters Moltres. Red finds the Sapphire lies at the deepest part of the Dotted Hole in Ruin Valley however it is stolen by a Scientist named Gideon, who takes it back to Team Rocket's warehouse in the Five Isle Meadow.
Red infiltrates the warehouse and defeating the remaining Rocket Admins, who realize that Giovanni has disbanded Team Rocket. They do, however, vow to return one day, and bring Team Rocket back to its former glory. Gideon reluctantly gives back the Sapphire and Celio is able to link the network to the Hoenn region.
F.A.Q.
To Obtain the Everstone: to obtain the Everstone, the player must capture 20 Pokemon in their Pokedex and meet Oak’s Aide on Route 10 on the 1st floor of the Pokecenter.
To Obtain the Itemfinder: to obtain the Itemfinder, the player must capture 30 Pokemon in their Pokedex and meet Oak’s Aide on Route 11 on the 2nd floor of the lookout station.
To Obtain the Amulet Coin: to obtain the Amulet Coin, the player must capture 40 Pokemon in their Pokedex and meet Oak’s Aide on Route 16 on the 2nd floor of the lookout station.
To Obtain the Exp Share: to obtain the Exp Share, the player must capture 50 Pokemon in their Pokedex and meet Oak’s Aide on Route 15 on the 2nd floor of the lookout station.
To Obtain Eevee: to obtain Eevee, the player must enter the back entrance of Celadon Mansion and acquire the Pokeball containing Eevee.
To Obtain Lapras: to obtain Lapras, the player must talk to the scientist after defeating their rival at Silph Co.
To Obtain Old Amber and Aerodactyl: to obtain Aerodactyl, the player must obtain HM Cut which allows the player to obtains the Old Amber from the Pewter Museum of Science via a back entrance.
To Battle Raikou / Entei / Suicine: the player must complete the Sevii Islands post-game content by obtaining the Ruby and Sapphire for Celio. Depending on which starter Pokemon the player selects, Raikou / Entei / Suicine will begin roaming the Kanto region.
To Obtain Togepi: the player must travel to the Water Labryinth and talk to an elderly gentleman who will gift the player with a mysterious egg which will hatch into Togepi.
To Unlock Cerulean Cave / Battle Mewtwo: to unlock the Cerulean Cave which allows access to encounter Mewtwo, the player must defeat the Elite Four and complete the Sevii Islands post-game content by obtaining the Ruby and Sapphire for Celio
Event Pokemon:
Mystic Ticket: allows the player to travel to Navel Rock via the Seagallop Ferry to capture Lugia and Ho-Oh.
Aurora Ticket: allows the player to travel to Birth Island via the Seagallop Ferry where they must complete a puzzle that involves chasing a black triangle around the island which results in an encounter with Deoxys. Deoxys will revert to Attack Form in FireRed or Defense Form in LeafGreen once captured.