Grand adventures often begin where you least expect. Iris knows this because she’s read them all. But when she and her best friend, Sam, stumble upon an unusually dry riverbed on the outskirts of town, they make a discovery beyond anything Iris has read about: a hidden city, lost in time and shrouded in mystery. Storm clouds gather as secrets begin to surface. Can Iris and Sam uncover the truth in time to keep their friendship afloat, or will history repeat itself and pull them apart forever?