From the depths of hell, the fury of legend shall rise. While Sarah is nearing the end of her pregnancy, Chase is at death's door. In a race against time, his friends risk everything in the hope of bringing him back. In order to do so, Ares enlists the help of another Olympian as well as an unlikely ally. Someone they can't trust but desperately need on their side. Beyond the gates of the underworld, Chase questions himself and every one of his past decisions. Both his faith for the future and his confidence are shattered as he faces his inner demons in order to grow stronger. A new mentor steps in to guide him and help him reach his full potential. After having witnessed her homeworld being nearly obliterated by the Furies, Ryonna goes on a quest to rescue her brother-in-law who might have stumbled onto a technological advantage the Earth Alliance so direly needs. Meanwhile, the Furies are creating a fleet of advanced ships. As soon as their first super-destroyer is ready to deploy, they decide the time has come to teach the Earth Alliance a lesson in power. Can the Earth Alliance repel such a powerful enemy? And at what cost?