Beware (prologue)

When I awoke one morning, everyone slept. That was normal; I get up rather early. But when someone that shouldn't exist comes to warn me, I learn what I have to do. One other person is awake. I must find him or her, and find a way to wake everyone up before tomorrow night.

Powers of characters in this story are based off of those of the characters owned by Rick Riordan in Heroes of Olympus and Percy Jackson and the Olympians.