In the future, maybe in the year 2000, people will be forced to move underground and live in tunnels. Unfortunately, these tunnels are infested with mutated rat / alligator creatures known as "ratigators." You are pilot of a Sewer Shark, a craft designed to navigate the Sewers and rid them of ratigators. It's a dangerous job, but if you clear out enough vermin you can win a one-way trip to Solar City and sunny beaches.
