More than 1 million years ago, when the earliest human beings had just begun to walk upright and spread across the already ancient Earth, forces far beyond mortal minds were already tussling over the mammalian race’s destiny.

Deep in the mountains of what is today Hebei Province, China, a slightly hunched Homo Erectus man shuffled into his cave, striking a flint and lighting a torch. He moved the torch over the wall of his little shelter and dwelling. He grinned toothily, proudly looking at the rock carvings he’d made of the animals he’d seen on his hunting and foraging ventures.

There was a great war among the stars. One fought by celestial bodies over the terrestrial baby that was Planet Earth.

Humanity had grown. Evolved. Matured. True, their technology was millennia behind those that watched over their primitive species from the shadows. From where human beings had not yet gathered the courage nor the knowledge to venture. But in time, they would become this planet’s masters, and eventually, leaders among their own kind.

But who deserved a seat among the immortals? Who was worthy enough to escape the fate of all mortal creatures? Or were they all unworthy?

The secret history of the elixir of life would shape thousands of years of human history, culminating in the appearance of Elsa and Anna in the world.

The homo erectus man slowly got up and walked out onto his cave ledge, staring up at the glowing full Moon that bathed its luminescence all over him. He wondered what was happening up there, on the surface of that benevolent celestial body.

Then his reflective moment passed, and he shrugged, shuffling back into the safety of his cave.

This is the story of the war between Chang’e and her son, Yixin. This is the story of how it all began.