The Greek gods are very much real and are still active. Many of them still have children who are half god and half mortal. Most of these children are sent to a school known as The Academy, where they can be trained to fight, learn, and keep their heritage a closely guarded secret. Most of the children spend their whole lives at The Academy, becoming teachers after they finish becoming students. 

But the gods think it's time for them to have a new weapon, a more powerful one. So they start creating children of their own through nothing more than their own blood. These children are stronger, faster, and more powerful than your average demigod. They were trained in secret by the gods, getting first-hand experience with them. 

But the time has come for these children of the gods to go to The Academy, to meet the demigod children. But something is very, very wrong at The Academy.