Diana is a young woman with a mysterious mission. She is summoned by the museum to check out the special exhibition in the evening. She is not expecting to find a portal to another dimension.

But suddenly, the artifact starts moving and Diana is teleported to a different planet! Her first impression of the planet is that it is ancient and similar to the Mayan culture. But it is not Earth. Diana's new home is located in the Endless River Valley, an exotic and mysterious region. In order to return home, she will have to face numerous tests, solve hundreds of challenges and get through the jungle. Her first destination is the gate. A mysterious gate, which will lead her to an ancient city of the planet. The gate has been activated, and the gates are open again. Diana is given a new task - to find her way home through the gates.