- Elvo: Tell me where you come from.
- Kathy: I came here by accident. I'm trying to get home, but those two crazies won't let me go. They think I'm the only child in the world.
- Elvo: You are.
- Kathy: What?
- Elvo: Nearly two hundred years ago, a new kind of plague appeared. Tens of thousands of people died before a cure was discovered. Only a few hundred were saved. Unfortunately, the cure had unforeseen side effects. Those who took it became immortal.
- Kathy: Immortal?
- Elvo: That's right. We discovered we could live forever.
- Kathy: That's impossible!
- Elvo: How old do you think I am?
- Kathy: Forty?
- Elvo: I was forty-two when I took the cure and that was 180 years ago.
- Kathy: But that means you're 222.
- Elvo: That's right. Unfortunately, the sure also made us infertile. Since we took it, we've never been able to have any children.