Amy Chung had always loved her life by the sea in Busan, South Korea. However, she'd heard of a better lifef in a place called America, and she decided to immigrate there at age twenty-three, after she finished college. She started living in Miami, Florida, which was still close to the sea. Amy loved the sea spray in her face, the tide washing up on her toes, so obviously she would choose Miami.
Zeus saw from Mt. Olympus Amy's "amazing profile," and decided to have an affair - why not? They got drunk and went to the bedroom. After, Zeus left, planning to give Amy a note later when she had the baby. However, Amy took a pregnancy test later on and discovered that she was, in fact, not pregnant. Zeus wasn't paying attention at the time, thank goodness. He didn't introduce himself as Zeus yet, again planning to explain that in his note.
She decided to go to the beach for the hundredth time, a few years after her immigration and only a little while after Zeus' affair with her. While there, a man walked up to her and started flirting. Amy, being single, flirted back. They immediately hit it off, and Amy invited the man to her house. The man introduced himself as Bryan, and Amy and Bryan laughed all the way to Amy's house. There, they did it. Afterward, "Bryan" told Amy about Camp Half-Blood and everything she needed to know to get there. He even introduced himself as Poseidon.
Nine months later, what a pleasant surprise: a baby girl! Amy named the girl Madison (for no particular reason other than Amy liking the name) and went home happily with it. On her doorstep, she found a silver necklace with the words, Tap clasp twice, was inscribed on the dolphin charm. Amy (who was clear-sighted), puzzled, tapped the clasp twice and it grew into a long, bronze sword. Amy tapped the dolphin charm (which was still there, set in the hilt) and it became a necklace again. She knew this was for Madison to fend off the monsters.
Madison grew up very popular among her friends. She had a normal childhood, rarely ever going on airplane flights except once, when lightning struck (Zeus found out that the child was not, in fact, his). She got into trouble many times, but she still had a happy and normal childhood for the most part. (Including a first kiss...)
At age eleven, a hellhound attacked. Still, a satyr was sent from camp, living very nearby Madison, so when he heard a shout from Madison's front yard, he knew something had attacked her. The satyr camp running from down the street. He stabbed the "dog's" heart, and it disintegrated into dust. Then he pleaded with Madison to go to camp with him. Madison counter-offered instead, that she would get to stay until age fourteen, with the satyr by her side ALWAYS except when she was sleeping or bathing (but the satyr would stand guard outside). So the satyr fended off a harpy (age twelve), some Stymphalian birds (age thirteen), a raccoon (it was in the dark, and it looked like a monster, okay?), and another hellhound (age fourteen). Madison was still fourteen, but her fifteenth birthday was still nearing.
Their best chance was to take a direct flight to Manhattan and taking a bus to Long Island, but Madison explained that on the only flight she'd ever been on, thunder struck and the flight had to touch down on the nearest airport, delayed. Now the satyr had eliminated one godly parent choice for Madison, AND the possibility of going on an airplane. So they went on a train, which was relatively safer but took much longer. Finally, they reached Camp Half-Blood (while there, Madison turned fifteen).