So you no Percy Jackson he is half blood he goes on adventure to the underworld to save his mom to make it there first he go to the museum to get one pearl then he kills the monster there and he goes to Hollywood and the casino and magic cookies make them stay for days. Then they go to the underworld and find some hellhound
Then he and his friends have three pearls and Zeus said they can"t leave because he is saving his mom and they need four to all leave so Grover stays and says I am your protector.
On their way back they find Luke He was the one who put the stick In the sheild
