In the realm of the Olympian gods, a sense of doom prevails as the Titans prepare for war. Percy must rescue the goddess Artemis, who has fallen into the clutches of dark forces, before the summer solstice. This adventure will pit him and his friends against the most dangerous creatures of Greek mythology and pose deadly threats. However, the Titans seem to have forgotten that Percy is no ordinary hero. After all, he is the son of Poseidon.