What happens in Percy Jackson and the Olympians the last olympian?

Answer 1

The Olympians will have to battle Kronos. Kronos has taken over Luke's body and is destroying New York with his army.

The Gods are fighting Typhon because he has escaped while forty half-bloods and the Hunters fight Kronos' army. The prophecy comes true as Percy gives Luke the cursed knife (Annabeth's blade that Luke gave her) to defeat Kronos. Luke sacrifices himself, and dies.

After the death of Kronos the campers begin to rebuild Camp Half-Blood, adding cabins for the minor gods and Hades. Percy and Annabeth begin dating, while Rachel becomes the new Oracle for Camp Half-Blood.

Answer 2

there is alot. First, the prphecy is recvealed.A child of the eldist gods shall reach 16 against all odds and see the world in endless sleep the hero's soul, cursed blade shall reap, a single choice shall end his days, Olympus to preserve, or raze. Percy then goes and bathes in the river of styx making him vulnerable in a spot on his back. then for like 300 pgs a battle goes on. luke is dead. annabeth and Percy finally go out. rachel is the new oracle and all the gods have to start claiming their children. mote: these are the main points. there are many others but it would take forever to list them all.