Hiya, seeing as this is the Plot section, lte's talk about the scipt :p
WELL generic haha, but that is fine, if you want a generic storyline, that is what some people want and hey, i is your game, you can have it as eneric as you like the only questions i have is how does Evergreen know about the characters, and why is she giving them her precious pokemon? O-o and also, Sinnoh is in a temperate/arctic region of the world, so why is there a tropical region right to the ewest of it??
anyway, that is all i have to say have fun