This third entry to the world of Steam Prison presents two new tales for our heroine, Cyrus. A New Theory, presents a new, alternative take on the original tale where Sachsen is the one to meet Cyrus instead of Ines, leading to her involvement with the HOUNDS and a new romantic ending with fan-favorite Sachsen.

The Cainabel Story follows the Grand Ending of the original Steam Prison as Cyrus and her party of handsome men journey to the new desert kingdom of Cainabel, where Cyrus meets with either the younger king, Jevite - a friendly, capable young man who burns hot like the sun as he investigates the former king's passing, or the older king, Jereme - a stoic beacon for his people, as introspective as the moon while he tries to secure his kingdom's future.

What will Cyrus learn from the handsome kings of Cainabel? Can she truly help guide them and their nation toward a better future? And what about her own future? Surely the mysteries and strange experiences of Cainable will light her way...