After the tragic events surrounding Medusa's disappearance, the boys pay a visit to the inventor Daedalus, whose genius offers hope of a cure. But, unwilling to wait for answers, Hercules acts on information from the unscrupulous Crios and sets off in search of his lost love. His decision soon sees the boys literally running for their lives as they become the prey in a brutal manhunt. With hopes of an escape fading fast, their courage is tested to its limit, until a lifeline comes from an unexpected source.

Jason is reminded of his promise to Circe and her grim warning should he fail to honour their pact. With her threat hanging over him, he has no choice but to act - he must kill the queen. Infiltrating the palace will not only be mortally dangerous but also nigh on impossible.

The heroes set out under the cover of night, but soon Jason's intentions start to unravel. As the alarm is raised, it will take more than just courage and chemistry to save his life - he needs the help of someone on the inside.