The quest was supposed to be easy. Steal some stolen weapons back from a couple giants, then stop at Leo's favorite Mexican food place on the way back to Camp Half Blood. What you weren't expecting was for the giants to find you and capture you. There were two, Polybotes and Alcyoneus. Not the type of guys you wanted to mess with.
At first they seemed harmless, but your perception on that quickly changed when they had captured you and forced you into cages. Alcyoneus did some kind of ancient magic on the two of you, a physical link. As a result, you could feel all pain Leo felt, and vice versa. The giants took turns exploiting your weaknesses, taking great joy in the fact that you could feel the same things, but not help each other.
They had finished torturing you for the third time in two hours, claiming they were hungry and needed to get something to eat. So they left you two alone in the abandoned warehouse you were trapped in. Leo looked at you from his own cramped cage. His expression was hopeless, and his face was scarred and bloody. You probably looked the same.
"We're gonna be okay, yeah? Just gotta find a way out of here." He attempted to reassure you.