Heroes of Olympus: The Son of Neptune by Rick Riordan
This is the 2nd book of the epic series Heroes Of Olympus.
I recommend this to ages 10+.
This is when Percy Jackson has awoken in the wolf-mansion where he is trained by Lupa the leader of the pack. Then he is sent south where he will make a decision which will mean either the safety or the destruction of the gods . . .
Vinny