Cynthia, an 11-year-old American, isn't entirely happy with her life, comfortable though it is. Still, even she knows that she shouldn't talk to strangers. So when her mysterious neighbour Miss Hatfield asked her in for a chat and a drink, Cynthia wasn't entirely sure why she said yes. It was a decision that was to change everything. For Miss Hatfield is immortal. And now, thanks to a drop of water from the Fountain of Youth, Cynthia is as well.