Percy Jackson is a 6th-grade boy with ADHD. He lives in New York City with his mother and mean stepfather who he calls Smelly Gabe. His discovers that he is a demigod- a half god and half human. His father is Poseidon, the god of the water. His mother decided that he should go to a safe camp for demigods called Half-Blood Hill.
Zeus, the god of sky and the king of all gods, sent a minotaur to kill Percy Jackson because he thought he stole his master bolt. Percy killed the monster but his mother was taken hostage. Percy goes to Camp Half Blood and is welcomed as a hero. In the camp, the head counselor named Luke trained Percy in how to fight. Percy was sent on a quest to find Zeus' master bolt. He takes his friends Annabeth, daughter of Athena (goddess of wisdom) and Grover, a satyr on the quest.
Percy, Grover and Annabeth went on the quest and have many adventures. They fought with monsters, robots and gods. They fought with Medusa and chopped off her head. They fought with Ares, the god of war. In each battle, Poseidon, Percy's father helped them.
Percy, Annabeth and Grover went to the Underworld, which was Las Vegas. They got hypnotized in a casino and wasted five days there leaving them with one more day to find the bolt. In the Underworld, Percy found his mother. Hades found the bolt inside the shield case of Percy which Luke had given him. They all discovered that it was really Luke that stole the master bolt!
Hades finds Zeus' master bolt in the shield cover
Hades in his real form
Percy had three magic pearls that could bust him and his two friends out of the Underworld but he had to leave his mother behind. In the end, Poseidon, who loved his mother, helped her escape.