MOSCOW — A young girl finds a magic necklace made of mushrooms, but then an evil gnome steals it. Adventure ensues. According to her creators, Alfreya, the hero of a new children’s book who was conceived for Russia’s first theme park, is “an ordinary girl 10 to 12 years old with large, thoughtful eyes.”

One thing she is not is a Disney character. Opening a real international Disneyland in Moscow would be out of the question amid the current political standoff with the United States.

But Russia’s decades-long quest to build a theme park, which began during the Cold War rivalry with the United States, is finally reaching its fairy-tale ending.

The $1.5 billion Dream Island, when it opens on Saturday, may certainly remind some visitors of Disneyland. In place of Elsa from “Frozen,” there will be the Snow Queen, and in the Russian version of “The Jungle Book,” the jungle is populated by talking dinosaurs. Developers say the park will be inhabited by dozens of fairy-tale characters, all domestically produced.