Title.
The Last Olympian is abouta war between the Greek Gods and the Greek Titans. Kronos is the leader of the Titans and he "brainwashes" demigods(sons and daughters of the olympians and mortals) to join the fight against the olympians. Luke(a demigod) sacrifices his life for Kronos so Kronos can live and be in Luke's body. Percy and his friends fight Kronos and his army with demigods who are fighting for the Olympians while the Olympians battle Typhon over the Midwest. Percy must make a decision to either destroy olympus or save it.