There's something down there in the ocean, something terrifying. And you have to face it - because only you can save the Aquadome, the world's first undersea research station.
The alarm sounds and your submarine, the Scimitar, is docked nearby. But not so fast - you haven't even tested the Scimitar in deep water, and the crew at the Aquadome may have a traitor in its ranks. So be careful! You have many possibilities to consider, mysteries to unravel and life-and-death decisions to make!
Success won't come easily. It may not come at all - because, if you challenge the deep without using all your wits, you just might wind up as shark bait!