A museum exhibit unexpectedly sends a young woman to a parallel world. Now Diana needs to figure out where she is, how she got there and if she's ever going to return home. The young woman encounters a world similar to the Mayan civilization, but it's neither the past nor a parallel reality. Diana will face numerous test, travel far through the Endless River Valley, and meet strange people and wondrous animals while solving dozens of different challenges on her way.

When Diana, a young employee at the Museum of Natural History, notices a guard carrying away a rare Mayan bust, she rushes after him without thinking twice. But the pursuit takes an unexpected turn. Diana finds herself in another world, and not for the first time.