How to have the same dream as someone else?

Okay, me and my best friend LOVE Percy Jackson and we want to have the same dream! We want to be in Camp Half-Blood talking to each other and all the other campers. We want to do whatever we want and play capture the flag and stuff like that. We just want the same dream! Even if we can't control it. I know it's happened to a lot of people, its called synchronicity. Can you control it? If so, how do me and my friend get the same dream? Simple instructions please :) I'm only 13