Percy Jackson and the Lightning Thief

Lately, mythological monsters and the Olympian gods seem to be walking straight out of the pages of Percy Jackson’s Greek mythology textbook and into his life. Zeus's master lightning bolt has been stolen, and Percy is the prime suspect. Percy and his friends have just ten days to find and return Zeus's stolen property and bring peace to a warring Mount Olympus.
It is first book in Percy Jackson and the Olympians Series.