You are an explorer and adventurer and you've just returned to your home in London. You receive a tip that a mysterious man named Alastair Shepherd wants to meet you out in the English countryside on the ancient site of Stonehenge. Claiming he has secret information about the missing heelstone, it's no coincidence Mr. Shepherd wants to meet you during the peak of the summer solstice, a pivotal and celebrated event at Stonehenge. You are afraid this man is tied to a dangerous vision of the future, but you must face the enchantments and mysteries of this ancient megalith if you want to survive!