Shortly after finding out you were a demigod, Grover — that's what he said his name was — took you to the camp called Camp Halfblood.

But, almost not surprisingly, a monster (or person?) attacked you on the way up the hill, leaving you unconscious for almost the whole trip up.

Thankfully, it was just a concussion and not a 'in danger of dying' injury. As you woke up, you saw Grover pacing nervously around the room, muttering to himself.