The island of Atlas

What happens when you are suddenly sure that Atlantis exists and you know the way? You find that your step-parents are telling you Youre on the right track and you know they are not kidding? And then they suddenly disappear. The same thing happened with this trio which has genetical supernatural abilities. But thats just the beginning. You find that there is another competitor which wants to get the last player on his side. Now how will the trio find the last piece before the bad guy does and at the same time cross the three levels with the odds of the peril of the sea?