You were sitting on the docks, everyone was partying around you. Annabeth, Percy's girlfriend thought you had a crush on Percy and was severely jealous, so she pretended to accidentally push you in the water. Everyone laughed at you, but you didn't resurface. After about 30 seconds, people noticed something off. Luke took his shirt off and jumped in after you. He pulled you up to the surface, where you coughed up seawater. He held onto you tightly.