The events of this game take place in London, in the second half of the 19th century. Mark Flint is a young private detective. One day he sees several men assault a young girl near his apartment. He saves the girl, only to discover that he has seen her face already on a wanted poster. But the girl (whose name is Jewel) explains that she is being hunted by the mysterious society of Rosenkreuz. Her father was a great scientist who knew how to make items out of pure ether; his zeppelin was attacked, and the Rosenkreuz are after the ether-made necklace Jewel is wearing. Mark, Jewel, and their friends have to find a way to defeat the Rosenkreuz and their leader, the ambitious Irene, who won't stop until the entire world is under her control...

[From MobyGames]