Five years after his disappearance, Maya finds her grandfather and discovers that all this time he has been protecting them from an imminent danger they were not even aware of. However, they soon realise that they are far from being safe, in fact, the situation has become critical: if they want their attempt to save the world to go ahead, they must act now. Without thinking, Maya embarks on a journey into the unknown in which she will discover secrets that have been buried for centuries.