Hydra is an aquatic racing adventure in which your goal is to deliver a series of treasures, weapons, and other cargo without getting toasted by enemy warriors or crashing into one of the many hazards along the river.
Enemy thieves are trying to stealk the greatest treasures in Hydra. These are no ordinary museum pieces. Each of these valuable artifacts hides an important piece of the secret weapon needed to defeat the enemy. So the government issued you an experimental speed boat. You must use this powerful craft to navigate the treacherous rivers of Hydra and collect the treasures from the secret checkpoints before the enemy thieves get them first. If you succeed, you will be a very popular guy. Fail and you'll be all wet.