You had followed along on the quest to rescue Annabeth and Artemis. You were at the junkyard, and you, Percy, and Bianca were trying to figure out how to stop Talos. You and Percy both saw the hatch on the bottom of it's foot, and were both arguing with who would be the one to stop Talos. After a few moments, you hear Bianca's voice.

It's my fault the monster came after us. It's my responsibility. Here. She picked up the little god statue and pressed it into your hand.