The Adventurer: The Curse of the Midas Box

The Adventurer The Curse of the Midas Box is a 2014 British fantasy adventure film starring Michael Sheen, Sam Neill, Lena Headey, Ioan Gruffudd, Keeley Hawes, Tristan Gemmill, and Aneurin Barnard in the title role and directed by Jonathan Newman. It is the first in what is intended to be a film franchise, and was written by Christian Taylor and Matthew Huffman, based upon the novel Mariah Mundi by G. P. Taylor.

Mariah and Felix attend a lecture by their father in the British Museum. Two strange men enter mid lecture, startling their father. The boys unaware sneak away into the museum for more interesting pursuits. While Mariah chides his little brother Felix to come back to the lecture he comes across an odd man, Captain Will Charity Michael Sheen.This man keels over and collapses in midconversation revealing a stab wound and asking him to get his parents. After being tended to, Will reveals to Mariahs parents that an Otto Lugar has found the map to the golden box, he is close to discovering it. When alone with Catherine, the mother of Mariah and Felix, he presents her with two halves of a green medallion telling her to keep them safe. Catherine leaves the room and when they all return to further speak with Charity, he has vanished. ........

Source: Wikipedia