Percy is on a school field trip were he killed a teacher and found out the sword that his teacher uses on some days is the one that came out of the pen. And the teacher that he killed was asking about a bolt.
I know you have it.
I don't have the bolt!!!
Percy finds out he is the son of the big three and he is the one that was accused of stealing the master bolt but if he didn't return it within 14 days there will be war because of him.
We did it!!!
On the way to the under world they made a pit stop at Medusa's lair and then almost got killed. They killed her and brought her head with them every were.
when they got to the under world they found out that someone also stole his helm. Someone else wants war Arese wants war and knew that the bolt would return to the backpack.
They returned the bolt and the helm to there owners and returned to camp. They saved the world from world war 3.
In the end Percy's friend Luke tried to kill him but he survived. Percy almost died and the water didn't help him. The End.