Zagreus was quiet for a moment, gnawing at his bottom lip. "To join my uncles and cousins on Olympus. At least...that's what they think. What I really wanted, was to find my mother." A beat. "She left after I was born, because she thought I was stillborn, and she couldn't bear the heartache. And, I guess, technically, I was. That's why I can't leave the Underworld. My soul is bound to it forever."