Infinite

When almost more than half her school -including her best friends - partied ,danced and drank in her house, Olivia Hales relaxed in her cosy,childhood tree house and stared dreamly at the stars ,exhaustion taking over.That night,She receives a letter. (Well,not really, more like 'found a letter)

She discovers something that may (will) change her life for sure.Travelling to foreign galaxies and planets,Meeting strange human species ,having a dinner on the moon,and falling in an Evil man's traps.Oh ,and being forced to save the entire world,if that counts.
love too.

How can one crumbled,messy letter,Do all this to her?