The story follows a diver who must navigate underwater caverns and retrieve treasure while avoiding deadly traps. The diver's goal is to collect as much treasure as possible within the allotted time, all while managing their air supply.
The gameplay involves controlling the diver as they swim through the underwater environment, collecting treasure and avoiding hazards such as sharks and pitfalls. The game requires players to manage their air supply, making quick decisions about when to resurface for oxygen and how much time to spend exploring each level.