a couple months after the second titan war Percy Jackson and Ben Carter and Jason Grace have disappeared from their perspective camps with the primordial goddess Gaia and her children the giants rise to begin the second giant war and a sacrifice must be done to put an end to the primordial goddess Gaea once and for all

when Ben Carter gose to Yancey academy for troubled kids he meets two new friends Percy Jackson and Grover Underwood he begins to discover his true lineage and joins the fight against the titan lord Kronos