"[first lines] Hi. Welcome to the future: San Dimas, California - 2688. And I'm telling you, it's great here. The air is clean. The water is clean. Even the dirt is clean! Bowling averages are way up. Mini-golf scores are way down, and we have more excellent water slides than any other planet we communicate with. I'm telling you, this place is great, but it almost wasn't. You see, seven hundred years ago, the Two Great Ones ran into a few problems. So now I have to travel back in time to help them out. If I should fail to keep these two along the correct path, the basis of our society will be endangered. Ah, but don't worry: it'll all make sense. I'm a professional."