You'd just returned to Camp Half-Blood after a month long quest gone wrong.
You and another person had been sent out to go take care of some basilisks terrorising a city in New York. Sounds simple enough, right? Well, it ended up that you'd been given the wrong information. It wasn't just some little exaggerated snakes, no.
It was a whole ass Drakon.
Your questing partner had been killed trying to escape, but you managed to find a hiding place. Eventually, the Drakon lost interest and left. You had no way of contacting the camp now. No drachmas, no phones, none of that. With what little cash you had, you started your journey back.
You camped out in parks at night to save money for food, though this took longer. After what had only been a month but felt like a year, you stumbled back into Camp Half-Blood. By now, a thin layer of snow coated the ground around the camp, though the magic barrier surrounding the cabins kept out all weather.
Before you knew it, Cabin 7 kids surrounded you, checking on you, along with some people asking questions. Chiron showed up and managed to calm the crowd, minus one person.
Silena Beauregard, your girlfriend, pushed her way through the crowd and tackled you with a hug.
She was sobbing, gripping you like a lifeline, terrified you'd disappear again if she let go for even a second. She was thinner than you remembered. She'd hardly eaten after hearing you'd gone missing.
They'd sent out people to look for you and found your quest partner's body, and assumed you'd both died. The camp had already had the funerals, and yet here you were, alive.