Annabeth travels to Percy and Leo and trying to tell him to leave, quickly. Because something is dangerous is happening. Also, she was very nervous because she had a bad feeling about something happening. and they need to leave using the Argo II Ship.
He is saying the truth, I know it.
As they were leaving, the Argo ship fired missiles. And it was Leo who shot them. He said: "I don't know what happened. It was like if someone is controlling me!". And now they're being attacked by Rome's army, which is just the beginning of the great war.
Here's the plan.
Leo tried explaining what happened. He said if it was like he was being controlled. And he expressed Annabeth's nervous feeling when she was arriving and she knew what the problem was. Gaea, the mother earth. She's evil and planning to destroy the Olympians gods.
Annabeth explained about Gaea, the mother earth that is rising again and going to destroy the Olympian gods and take over. They have to call the crew to prepare and try to stop her. So she tells the mission and information.
Annabeth explains about the Doors Of Death. Where hades' house is near underground. Also, to close it from both sides at the same time so the dead do not escape. Because Gaea's army keeps reliving as while as they're open. And getting crew members to help them.
They had to split up and go call the crew members to stop Gaea, It's not going to be easy, they kne that. They have to go through challanges, and make peace. Will they survive? Will they close the doors of death? Who knows.