While the Olympians struggle to contain the rampaging monster Typhon, Kronos begins his advance on New York City, where Mount Olympus stands virtually unguarded. Now it's up to Percy Jackson and an army of young demigods to stop the Lord of Time.

Leopardstar knows her destiny is to save RiverClan from destruction, so as the rise of ThunderClan deputy Tigerstar shatters peace among the clans, Leopardstar must decide what kind of leader she will be.

Clay has lived his whole life under the mountain. The MudWing dragonet knows war is raging between the dragon tribes in the world outside -- a war that he and four other dragonets are destined to end, according to the mysterious prophecy they have been taught. The five "chosen" dragonets were stolen from their homes while they were still in their eggs -- and hidden away for years -- all to fulfill the prophecy. But not every dragonet wants a destiny....