Today is your 13th birthday. To celebrate, you're getting your very own Pokémon. Your Mom wakes you up, and you visit Prof. Maple to receive your starter Pokémon.
The Professor doesn't seem to be at the lab, but one of the assistants gives you your Pokémon instead. What? How come the assistant knows nothing about the professor missing and doesn't tell you something about it? You get to choose between 3 new starters. You also receive your Pokédex.
After getting your things, you go back home. You start talking to your Mom.
All of a sudden, the TV starts flashing. A reporter says that Prof. Maple has just been kidnapped... by a man named Giovanni. You're going to have to rescue him before it's too late! Liek, wut? You're a 13-year old kid and you have to chase a leader of an organization down? And if those news reporters have enough information and know that a guy named Giovanni has kidnapped him, why don't they just leave it to the cops?
After chasing him who? The professor? across Koyoto, you learn that he once again, who? has fled to a strange place called Johto. You chase him down to try to bring him to justice but to do so you have to infiltrate his organization. Eh? Generic much?