Two of the three tragedies have been fulfilled and Hercules races to prevent the third one – "the dying of the light" – from coming to pass. He has no choice but to recruit a reluctant Thor to succeed, but Loki is already one step ahead of them. With Odin blinded, everything threatens to come to an end. Now, Hercules and Thor must work together to prevent Ragnarök from dooming everyone in Asgard and on Earth.