A shadowy figure reveals herself—a Yuan-ti identical to Nadia, pleading for The RAIN’s help to stop an evil Yuan-ti from the Material Plane threatening her people. But secrets lurk behind her desperate plea. At the Ebon Spire’s ceremony, the truth strikes like a dagger: the villain is Rahas, their long-defeated foe. What is Rahas’s true plan, and can The RAIN stop him before he plunges Avernys into chaos.