Despite their newfound fame after slaying the Minotaur, the boys are still penniless and hungry. When an old man asks them to find his missing daughter, things seem on the up, but it soon becomes clear that their task will not be an easy one; she has been taken by the Maenads, fanatical worshippers of the god Dionysus.

With the hopes and life of the old man fading, it is a race against time that Jason cannot turn his back on. But just when their perilous task seems at an end, he comes face-to-face with a stranger named Medusa.

Whilst hunting in the mountains, the boys stumble across an abandoned baby. Jason refuses to leave the child to die and insists he return home with them to Atlantis. But this charitable act has far-reaching implications, and the gang soon find themselves embroiled in a complicated web of secrets and lies. With their own lives now on the line as well as the child's, it seems they may well pay the ultimate price for interfering with fate.