After being kidnapped by Hades and taken to Infernos, Ember finds herself weak and enabled to escape. But determined to escape Infernos and get back to Kairos and Ares to warn them, she gathers all her strength and tries to find a way out of Infernos's lair. After unable to save Ember before she was taken, Kairos and Ares set out to find Infernos's lair and rescue Ember. But they still encounter trouble on the way. Will they be able to find and rescue Ember in time?