Wrath of the Titans

Ten years after defeating Hades' Kraken, Perseus, the demigod son of Zeus, now lives as a fisherman with his young son Heleus, after the death of his wife Io. Zeus visits Perseus and asks for his help, saying that humans are not praying to the gods; as a result, the gods are losing their power and becoming mortal, meaning they can no longer sustain the walls of Tartarus which are holding back the imprisoned Titan Kronos from freedom. Perseus, valuing his family's safety, refuses to get involved.