Basically what I have so far is this: You are a submarine looking for treasure and stuff. Equipped with nothing but your trusty sonar scanner and your state of the art Bright Blinking Beepy Thingy (BBBT) you must scavenge the ocean floor for long lost riches. But beware, as much as your sonar is handy, it also has it’s drawbacks. Every pulse you send out attracts the attention of underwater pirates, and if they find you bad things are sure to happen.